All the dealerships I've worked at must have distilled water in their taps, haha

@jduv6455

Жыл бұрын

True dat 🤣

@SlikLizrd

Жыл бұрын

Those "Dealerships" you worked at didn't care about maintaining their customers' batteries with the longevity of the batteries NOT their concern. Tap water in the customer's batteries means more battery SALES later on. THEY get to go "ha ha" at the fools who believe their bulls**t while they sell 'em a new battery that would have lasted MUCH longer with the use of Distilled Water.

@SlikLizrd

Жыл бұрын

@Davemike27 Because the "subject matter" turned out to be Distlled Water being used in both Radiators AND Batteries. In both instances, only DISTILLED WATER should be used -- due to huge variations in water hardness across the entire U.S.A. . Pity the fools who refuse to believe science when they say Tap Water "is just as good".

@infernaldaedra

Жыл бұрын

​@@Davemike27because idiots put tapwater in their batteries which ruins the expected life of the battery by introducing sulphides into the lead plates. And adding tapwater to coolant completely negates using corrosion inhibitors and biocides and will cause the pump to work harder and is not the fluid the car was supposed to use ultimately reducing cooling performance and system performance overall

@infernaldaedra

Жыл бұрын

Yes because dealers sell cars and add ons like fake warranties so they can destroy your vehicle to sell you a new one later on

they say used distilled water because the manufacturer can't guarantee the quality of the water in your area. you may have very high mineral levels.

@robertthomas5906

Жыл бұрын

In some places it has chlorine. Where I grew up the city water had a lot of it.

@marshmower

Жыл бұрын

We have funky water. Id use it for a quick flush but then flush it again with distilled. There's slight suds that last a few seconds in our tap water.

I'm a 30 plus year professional mechanic and have been told for many years that you have to use distilled water in cooling systems and batteries. I have in fact used both in the radiators and never seen a problem with either. Unless you use straight coolant or straight water. Either of those are bad. Now in a battery I only use distilled or DI water. Here's my theory, a cooling system is mixed with coolant which is going to dilute the water and condition it. So there won't be a build up especially if you flush it at the manufacturers recommend schedules. And it will just leave (at the worst case scenario) a thin film of scale and, when you flush your system, if you throw in some C.L.R. and flush it with that it will clean the mineral scale. As far as the battery is concerned, I never use tap water cause its impurities will stick to the sides of the lead plates shortening the life of the battery or shorting one or more of the cells and you can't just flush a battery.

@skylined5534

Жыл бұрын

Excellent write up! Agreed.

@midnightrider1854

Жыл бұрын

@@skylined5534 Thanks.

@lonelamon

Жыл бұрын

same here

@midnightrider1854

Жыл бұрын

@@lonelamon i guess we are the three smart amigos then. 🤣

@t-bfr45-70

Жыл бұрын

So actually the reason to use distilled water is because distilled water is none conductive. Electrolysis in the system can cause damage to the engine faster this especially plays a part when you have iron to aluminum parts. I was under same impression for years that tap water made no difference but after dealing with a antifreeze rep for way to long there is a massive improvement of the life of the antifreeze which also means less radiator and heater core issues.

Guys, no matter what. Don't use any leak patch for your radiator. I completely flushed my system and it still clogged

@jay94dee91

Жыл бұрын

Yeah, temp is a key word. But just like you said it can clog other area's

@draconpost

Жыл бұрын

If the car is old and you don't want to throw money into it - it's ok. If you want to sell the car and pour in three tubes of leak patching dust - then that's a bitch move and these people should burn in hell.

@paulturner3553

Жыл бұрын

@Jason Puddy, Pepper is more of a urban legend than truth. Best to buy that which has the best odds of working for one's problem.

I just purchase the 50/50 mix so no mixing is needed. It seems to be working for me all of these years.

@LynxStarAuto

Жыл бұрын

And that's totally fine. But for the price of one of those premixes, you can make 2 gallons of 50/50. Which is more beneficial if your car has a high capacity cooling system.

@x-man5056

Жыл бұрын

It makes your anti-freeze cost twice as much. The premix is 50/50 and cost the same as concentrate. The 50/50 mix is good for topping off only. If you get the Prestone yellow, it will mix well with any type anti-freeze.

@DustyakaDD

Жыл бұрын

Good point, I guess I overlooked the extra costs of it some how. Lol Thanks for pointing that out, I will keep that in mind next time I need to replace the coolant.

@slingshotnerd

Жыл бұрын

Lol these penny pinchers acting like premixes cost an arm and a leg to buy, get over yourselves

@FP194

Жыл бұрын

@@LynxStarAuto And if you get it wrong we’ll let’s just say it’s not good

For all the naysayers here - • Distilled water has zero minerals or impurities that can corrode the radiator and engine parts. • Distilled water has a higher heat transfer rate than most of the anti-freezing coolants available in the market. • Distilled water prevents electrolysis in the car’s cooling system and prevents scale formation. Tap water contains minerals that will eventually form deposits inside your radiator, plumbing, and water pump. This is also referred to as the hard water scale. This is all types of tap water we are talking about here, no matter where you live.Tap water has mineral deposits in it by nature. When tap water is repeatedly used in your cooling system, you will start to get a buildup of calcium and magnesium. This build-up is also referred to as a hard water scale, and you’ve likely seen it on your household appliances. When your radiator gets mineral buildup or hard water scale, it becomes less effective at cooling off those hot engine parts. And even just a little build-up is a huge problem. A 1/16-inch hard water scale will make your cooling system 40% less effective. That means your engine can get 40% hotter than it should, which can cascade into many other engine-related issues. A less effective cooling system can lead to your engine overheating. When your engine overheats, it can, and if untreated, will cause damage to your engine. Some engine parts will warp with the heat they are not meant to withstand. Common parts that break and require repairs after engine overheating include a cracked head gasket (average replacement cost $1500), warped cylinders (average replacement cost $500), and water pump replacement ($350- $700). It is much cheaper to be proactive and replace your coolant with the proper ingredients before negligence or laziness leaves you without the convenience of your vehicle because it is in the shop undergoing a costly repair.

@bricegraham8256

Жыл бұрын

Dude you explained this so perfectly. People seriously don't understand the ramifications of using tap water in their car. I believe that's why none of my cooling system components have gone out yet. My aunt used to always get it maintained at a local shop that does great work and does not skimp. I'm sure he's sold her coolent flushes and anytime it was topped off she never used water. I've only ever used coolant to top off and have always been good.

@austinr8501

Жыл бұрын

Everyone here should stop reading other comments once they've read this since the facts are here. Why use tap water on a multi thousand dollar vehicle? Distilled water is less than $2 a gallon. It's what cooling systems are designed to run on. Idk, all I do know is that people who care about their cars and want them to last indefinitely maintain them immaculately

@bricegraham8256

Жыл бұрын

@@austinr8501 I couldn't agree more

@bricegraham8256

Жыл бұрын

@Assembled Existence I've never heard of that. I may have to try that out

I’ve used tap water to mix coolant, and when I pulled the motor apart a couple years afterward, it had kidney stones in the water passages. Always use distilled water, especially if you have hard water

@D4x4Bronc

8 ай бұрын

Used tap water for months on a leaking radiator for emergency situation and it had mud in rad when I broke the side tanks off.

I just use a old juice jug. Eye ball a little over half and half antifreeze. And of course, tap water.

@KekeeBlack

Жыл бұрын

The point went way over your head 😂

@edwardautrey3671

Жыл бұрын

City water has many additives

@sammyhooligan803

Жыл бұрын

No, distilled only, What?

@SlikLizrd

Жыл бұрын

@@edwardautrey3671 YES, but a lot depends on it's size and where the City is located. All Water Treatment Plants are not exactly the same, and produce differing results. Phoenix, AZ has excellent water treatment facilities, and they issue a Water Quality Report that keeps us informed on our water issues. At home, we have a 2-Cartridgee, Under-Sink-type water filtering system for our Cooking/Drinking water. As Frank Zappa said: "Nothin' but the best for MY dog !" 😁

@critixair1257

Жыл бұрын

Tap water works just fine I’m a mechanic dads a mechanic been using it since like 2010 when everything started to get absurdly expensive and all cars are working just fine

The reason why you don't want to use tap water is because of electrolysis. It will cause build up and corrosion in your cooling system over time. It also makes quick work of the plastics which have become so commonplace now on newer engines. Distilled water doesn't contain ions, therefore it doesn't conduct electricity. It literally costs under a dollar at the supermarket. Just buy a couple gallons and store it at home for future use. In case of an emergency, it can be drank. 👍🏽

@Fordgroup00

Жыл бұрын

Over time you have to replace your system anyways so your point is moot

@johnross4541

Жыл бұрын

Electrolysis occurs when an electrolyte is touching two different metals causing an electrical arc that eats away metal where they meet.

@josephjack254

Жыл бұрын

You're actually talking about deionized water. Distilled water is basically close, and available which is why the bottle says that. Go ahead and try to buy deionized water.

@bill7788

Жыл бұрын

horse carp it's due to the minerals and chemicals that can be harmful to the system'

@LynxStarAuto

Жыл бұрын

😂🤷‍♂️ y'all do you. Only giving me more work. 5 years left on my mortgage too. So I want to thank y'all. 😘

You have to use distilled water because tap water has minerals and other things that can build up on the sides of the passages over time and it makes the cooling system less efficient

How many shops/service centers/dealerships you think keeps jugs of distilled water around? None. They keep a sink or a hose.

@SlikLizrd

Жыл бұрын

That's why I service my Battery and Radiator MYSELF -- I don't rely on others for simple service items. I live in the desert -- where heat kills EVERYTHING -- I use Distilled Water in my Battery AND Radiator -- for that last bit of protection.

@pwhittyp5365

10 ай бұрын

Lol what's your point? That shops do it incorrectly and it's bad? Ur acting like saying shops do it makes it okay

Never trust a 50/50 protection level, always verify with a refractometer.

@daveyt4802

Жыл бұрын

How many have a refractometer?

This dude never drank from the hose as a kid.

Good water quality is very important in aluminum radiators

@SlikLizrd

Жыл бұрын

YEP. Vehicles with aluminum radiators and other Cooling System parts are sensitive to electrolysis damage. Test the Coolant with a Voltmeter. If electrolysis is present, run a Ground Cable from the Engine Block to the NEGative Battery Terminal. Problem SOLVED.

It is cheaper to mix your own with concentrate and distilled water. You can make 2 gallons versus 1 gallon of the 50/50 mix and save yourself a couple dollars

@LynxStarAuto

Жыл бұрын

More than a couple bucks. You save 20+ dollars.

@skylined5534

Жыл бұрын

I just go to the dealer and pay 16 British pounds for the correct factory fill stuff in a 5 litre pack, in this case Renault type D.

That's why I always buy premixed coolent. I only buy Honda fluid for my Honda.

@markkaminski2416

Жыл бұрын

Can't always trust it, I had an unopened jug and left it outside overnight and found it frozen the next day.

@toddsmith1617

Жыл бұрын

I only buy Honda for my Honda.

Too late, I filled your brand new chevy with dexcool and tap water when it had 7 miles on it at the dealership. :3

@GMC.Sonoma.4.3

Жыл бұрын

😂

This is absolutely correct! That's how I mix mine, great video!

Just get a bucket and pure both the antifreeze concentrate and the one gallon of distilled water. Pure what you need in to your radiator and the rest in to antifreeze bottle.

This is one reason why I don't use tap water at the coffee maker.

@daveyt4802

Жыл бұрын

And humidifiers...

You can get free distilled water from your condensing tumble dryer. Use Distilled water also for screen wash dilution.

@skylined5534

Жыл бұрын

True!

So long as the concentrate contains > 95% ethylene glycol (which has a boiling point of 200° Centigrade) and the water is distilled/demineralised. A telling feature of the concentrate is density; must be greater than 1090g/litre..

Better yet you should explain why distilled water is recommended versus tapwater. Because I know I have never personally used distilled water.

I hate those jugs. You can't even tell where the 5th quart line is. I never use those jugs for mixing. I use a kitchen JAR with all the marked lines on the side for more accuracy

@justacinnamonbun8658

Жыл бұрын

I buy the Mobil1 oil in the 5 quart jugs and those also don't have a 5th quart line so my workaround is..... 🤫 When I buy the jug new, I use a sharpie to mark where the oil level is. I hope it's accurate. 😆

@TTime685

Жыл бұрын

I don't think a few ounces off is gonna make a big difference buddy lol

@rupe53

Жыл бұрын

are you really worried about that 3 degrees difference when 50/50 is already good to about -25 degrees F?

@adamhorton1601

Жыл бұрын

There is no fifth quart mark because it's a gallon jug.

@justacinnamonbun8658

Жыл бұрын

@@adamhorton1601 😆

I was standing at autozone Waiting to talk to the manager.. And I noticed on their signs they changed it to "just add distilled water" and "use only distilled water" posted everywhere now.. Most of the jugs said it too.. instead of "just add water" like yours

Really depends how good your water is. I fortunately live where the water is really good. However some places you definitely cannot add hose water.

@erinburke9711

Жыл бұрын

Seems extremely silly to not spend a buck or two for a bottle of distilled water.

@ineedmorecarrots6063

9 ай бұрын

how good is your "good water" anyways

16 years professionally and never had a problem not using distilled water 😂 Just get the 50/50 pre mix if you're that worried about it.

@erinburke9711

Жыл бұрын

Never had a problem...right away. It takes time for precipitates to form and start to cause issues.

Just find a DEF jug. 2.5 gallons. Easily cleaned. Has a spout. Translucent so you can see volume. Perfect.

@slyfox4564

Жыл бұрын

Imagine using DEF

@tbobtrasman4875

Жыл бұрын

@@slyfox4564 Whew... That would stink. Look up the MSDS for DEF. Urea and distilled water. MSDS is a magical thing.

50/50 mix is the bare minimum to mix it. Have not done that in 40 years, I always do a 70/30 mix antifreeze being the 70 percent, you have a higher boil temperature and lower freeze protecting.

@D4x4Bronc

8 ай бұрын

Too strong unless you in major freeze zone

Thanks for the video. Please show how you made that custom funnel

I also put a zip tie on the bottle so I know it’s a mixed bottle

@tonywilliams2264

Жыл бұрын

I use a sharpie and write mixed on my bottle.

@D4x4Bronc

8 ай бұрын

Sharpie

Never use faucet water in a radiator it will scale up over time and plug up its channels always have distilled water 💧 after you put in your concentrated anti-freeze.

Been doing it the other way for as many years as I’ve been working on cars and trucks and everybody I know does too. We have done this on thousands of vehicles, never had not one problem!

They say to use distilled water because the minerals in regular water can mess up your thermostat and clog up your cooling system. Distilled water is also recommended for water cooled PC’s. Same principal on a smaller scale.

I try to explain this to people at my parts job and they never understand...

Distilled water is a dollar a gallon at Walmart or you can make it like I do

and use distilled water and the wiper washer mix so you don't have hard water spots on the paint

Yes tap water has minerals that can build up

Good Job It saves customers money. Prevent Calcification. 😊

Howd you make the funnel? Good idea

keeping your coolant clean and changing it every few years will counter any issues the average person has with tap water over the average life span of the vehicle. Basically, you can go to ridiculous measures, but what do you really gain in the long run, unless you keep the car for like 30 years.

I worked at a dealer for 10 years. They never had distilled water in the parts department and we always filled batteries and radiators with tap water. Never had a comeback due to using tap water.

I used to only use 50 50 in my cars, I had a honda that would take on long distance trips and I would notice after a few months that my levels got lower, I started adding a bit of concentrate, about half a bottle, and I didn't have anymore overheating issues or it boiling out..

Mistake: Shake container to mix contents, then allow to sit for air bubbles to dissipate.

Would reverse osmosis pure water be just as good as distilled water?

Never had a problem with tap water!!

@LynxStarAuto

Жыл бұрын

Not right away, but it slowly kills your cooling system through time. Especially if you have a newer car that is heavy on the plastics.

@Fordgroup00

Жыл бұрын

@@LynxStarAuto Cooling systems slowly die over time anyways so your point is moot 😂🤦‍♂️

@akshonclip

Жыл бұрын

@@LynxStarAuto what kills a cooling system is PH swing. Not minerals from tap water.

@LifeWideOpen780

Жыл бұрын

truth

@IndiansAuto

Жыл бұрын

@@LynxStarAuto not within the 2 years. You’re suppose to flush it.

I'm 60 years old I've never mix with water just straight antifreeze never had a problem an live in Michigan

To all the boat owners. Make sure your lake is distilled water

@ssqdoncanio9016

Жыл бұрын

dis a joke right?

@LuvMyRoadKingClassic

Жыл бұрын

Thanks. Made my day! 😊

@onradioactivewaves

Жыл бұрын

Its usually distilled from the ocean

@uhhTabby

Жыл бұрын

Lake water and distilled big difference in bacteria idiot

This method will easily leave the engine under-dosed with concentrate. Read the manual. Add the correct % volume to the cooling system (eg 50%). Top up with distilled water. This ensures that anything trapped in the system cannot dilute your coolant below its correct concentration.

If I have left over real anti-freeze, I mix it with distilled water for when the reservoir gets a bit low.

Home boy forgot to mention that the flouride in tap water will ruin your vehicles 3rd eye. 👁 🤦‍♂️

I mean usually it’s not a big deal because the coolant has additives to prevent any corrosion or anything

I've used Water from a garden hose for over 100 demo derby cars with no issues. Lol. But, I've also used that water mixed with 100% coolant and never had issues in any vehicle over the past 30 years. Now, the oldest in my fleet now is from 2000. So it's only 23 years old. But it still runs fine, and has NEVER had a coolant issue. I'll ask you. Why don't you run well or city water in the system, if that water is clean enough to drink??? Here's why it's on there. Distilled water lacks impurities, but clean drinking water has such a small amount that it's "safe" to consume. You're coolant system will be fine if you use well or city water. However, there is a possibility your cooling system will corrode premature, however, with clean water, it's so slow, it'll never happen in our lifetimes. With older copper and brass radiators, it can happen in years, but all new systems are plastic and alum. So why is it on the bottle, to use distilled??? To save them from lawsuits when older cars fail, and it never left from the early 80s when those brass/copper rads were used. If you have a 1989 or never Chevy (not sure for others) you are fine using the drinkable tap.😊

Yes. Tap or hose water has ions and particles in it that will solidify in your coolant loop and are very difficult to remove and at some point, impossible. Distilled water has nothing in it, no ions to stick to hoses or anything. But it's really bad to drink 😅

Also it says yo can mix it 70 30 for higher temps and lower temps if you read the chart

I've just always used clean well water in my batteries and auto cooling systems and never had an issue.

The reason for concentrate is when you flush your coolant there's still some water left in the system so if your car takes say 6 gallons of coolant you'd put 3 in of concentrate and top off with water

70/30 is the correct mix. More antifreeze than water. Less corrosion and problems.

This is why I don't buy expensive antifreeze and have to mix it myself as I buy it already pre-mixed.

Dex Cool. I have that on my 1998 Chevy Cavalier.

Make sure that it doesn't have minerals added for flavor because that is gold reasoning for using

Is the gm dex cool same thing as the Zerex (ford) dex cool

But did you read the car manual for what the car requires?

Actual distilled water is not as easy to find as you might think. Check that it has nothing added. I always buy premix 50/50 and if you need 70% antifreeze add concentrate to the premix.

@eilliwwasniahc

Жыл бұрын

It is in every grocery store in my town, right next to the gallon jugs of drinking water. It is also usually found in drug stores. I have never had a problem finding distilled water.

@RoadKing05FLHR

Жыл бұрын

@@eilliwwasniahc a lot of it has minerals added. Last time I checked there was nothing.

@dustinpomeroy8817

Жыл бұрын

It's 5 aisles over from the Antifreeze at Walmart.

@RoadKing05FLHR

Жыл бұрын

I don't actually need it.

50/50 mix is a general guideline, mix your coolant according to the climate you will be driving in

50/50.. nuff said Jimmy

Just look up the capacity of the cooling system and divide by 2. Then make a gallon of 50/50 mix and keep that on hand.

Theres no 4 quart mark ? Maybe its a 60 coolant/40 water mix ?

My grandmothers Datsun that she purchased new in Texas has had nothing but water in it. Still running

@yamomsballs

Жыл бұрын

Texas stays hot enough that it won't freeze I'm hoping lol

@w900kw2

Жыл бұрын

@@yamomsballs well it's been in Mexico for most of its life

@yamomsballs

Жыл бұрын

@@w900kw2 fair enough, yeah water is fine as long as you don't let it freeze

@w900kw2

Жыл бұрын

@J H we did have a problem with it freezing one time only. We ran it without serpentine belts for a couple minutes.

well see on my 98 k1500... it uses coolant/water stuff a little about every oil change i gotta add a gallon. no biggie. i usually just rotate gallon water then next gallon coolant. my problem is... is that my fan clutch is weak and i haul and it gets a little hot not bad but prolly above the 210. and it usues it.

I got rid of DEX-COOL…….was going through radiators and water pumps for quite a while. Went back to the old school yellow and never had the problem again.

@SD-pi9co

Жыл бұрын

I've run Dex Cool in my 25 year old truck with 300,000 miles and never had an issue.

The problem with mixing 50/50 is, you still have coolant in the system, even after a flush, and you don't know if that was 50/50. The 50/50 you put could and will probably be more diluted from the liquid still in the engine,

It’ll mix itself in the car don’t over complicate it.

This is moot if you have a filter. Added one to my truck about 5 years ago. Best part is, you can get replacement filters that have conditioners in it to revitalize your coolant so you dont need to flush it under normal circumstances.

Had a coolant leak while on the road and used Mountain Dew to top it up. Car ran for years after that.

The zerex brand says mix with clean tap water or distilled water.

"Team Straight To The Hose" 🙋🏾‍♂️.

I've read not to use distilled water either. Says something about it stripping electrons from metal. Said soft water is what to use. I have no fkn clue so I just starting buying the pre mixed.🤯

It's the mineral content of the water that causes blockage of the core

Good video, would you make another video showing why it is important to use distilled water, and why coolant/anti freeze is mixed with distilled water. As a young man i had no clue about this info. In modern cars, they have many different metals in the system. * Also - how often should the coolant be changed. Doing the correct maint. can prolong the life of things in system like, water pump, thermostat, radiator. Not to mention avoiding over heating and a frozen engine block in freezing temps. There is alot to this subject for the DIY folks who are new to car maint. I like your videos, good job.

@SlikLizrd

Жыл бұрын

No sense making another video on this subject, because at least half of the respondants are arguing against the use of Distilled Water, claiming that "it doesn't matter" which kind of water is used in Batteries and Radiators. I use ONLY Distilled Water in our Batteries and Radiators. What other people do is none of my business.

Over the decades I've only used tap water, never a problem. But the last couple of vehicles I bought a couple gallons of distilled water. It's cheap and for the couple of times it's done over the years...why not?

Using Dex-Cool is a mistake... according to some people. Seems fine in my 2003 GMC 4.3, but I do change it every 3 years (rather than the 5 GM recommends). Five seems fine for the green stuff in my 1999 Ford. My 1997 Toyota gets only the proper Toyota red specification stuff.

I heard if you mixed 50/50 different coolant, it give you better % of cooling effective

All my mechanic friends and I always used distilled water after doing cooling system repairs in the early 80’s …😆😂🤣. Technically you should use distilled water,but I guarantee you if you had cooling system repairs done at any repair shop,the water is coming from a hose,not a bottle. All the owners manuals (far back as the 60’s & 70’s said “distilled water”. On a newer car you should drain and refill every other year when the car hits 40-50,000 just to keep the acidity low so you don’t blow gaskets as much. Antifreeze isn’t good for 100 grand just like oil change intervals shouldn’t be 10 grand either…if you plan on keeping it!!

Looks good, next step is to taste test it... LOL

That funnel is AWESOME!!!

as a mechanic i want everyone to know ur car at a dealership or shop is getting tap water mixed with concentrate. i’m just giving you the facts. never seen it cause a problem.

GM's DEX COOL should ALWAYS be purchased already 50/50 mixed..they use the proper distilled water so you don't have to..👍

@jaxturner7288

Жыл бұрын

That is if, you have one of the lame GM vehicles that came with orange coolant. And then of course you’re looking forward to having coolant leaks and corrosion problems in the future no matter what, unless you get it all flushed out and replaced with a quality coolant mixture. 👌

What remaining 2 quarts it’s only 3 quarts left? I’m confused 😂

This comment section is making my head hurt lol. Hard tap water will destroy your cooling system over time a lot faster than using pre mix or distilled water. Try running straight hard tap water in there next time if you don’t live in a freezing climate and you’ll see the rust develop quickly. This will ruin your water pump, radiator, heater core and eventually your engine. The system will get clogged from all the rust and the heater core will probably be the first thing to go. If you have money to blow then get the premix, nothing wrong with that. When you have multiple cars to service the savings of mixing it yourself is pretty good.

I was rather surprised how many local mechanics use tap water. I've always used deionized water (typically good ole distilled water from the grocery store).

This is just as saying the #1 mistake when put transmission in park is not using hand, parking or e brake, before after or not at all, it doesn't matter, it doesn't ruin the transmission... AT ALL!!!

Yeah most tracks require water. Only ran hose water in alot of dirt track cars. Never had a issue

I usually get my water from the pond next door.

I have never use distilled water! I have refill, many radiators, never once had a problem, so I’m not too sure why it has to be distilled!

Where do I get distilled water

It so much easier if you just use Shell Rotella 50/50 prediluted, it cost more, it pre mixed and it's good for 5 years! I have used it in hundreds of Diesel Engines for over 20 years it's the best I have ever used!!!

Y’all kill me with how you mix coolant. You have a gallon of concentrate and a gallon of water. If your system is bone dry, don’t waste your time pre mixing. Pour the full gallon of concentrate in your system then full gallon of water. Continue alternating. It’ll mix itself.

I've used tap water for almost 50 years without issue. Maybe low mineral content in Rhode Island?

Tap water is full of heavy metal & mineral salts, which plate out in your engine’s cooling system, and eventually lead to corrosion problems. This is especially critical in aluminum engines, as some of the minerals/metals are horribly corrosive to aluminum. Distilled water is cheap.

@Koda-Kitikawa

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If tap water was full of heavy metal, we would have much more pressing issues to be dealing with.