I took my Wrangler into the shop and they quoted me $500+ to do both front and rear diff fluid change. I found that unreasonable and began searching how to DIY. This video was easy to understand and quickly taught me how to do this in my own garage at a fraction of the cost. Thank you! Keep up the great work Wayalife

@wayalife

6 ай бұрын

awesome! Happy to hear our video was helpful to you and will save you a lot of money :)

@ryangarcia8634

5 ай бұрын

Yeah, I just called to have 4x4 service done as well they wanted $500+ for the diffs and the TC. Crazy what everything is being charged for! Transmission is next.

@wayalife

5 ай бұрын

@@ryangarcia8634 There should be no need to service the transmission for at least 100k miles or more.

@ericschmidt1987

4 ай бұрын

The royal purple container makes the change a breeze. Other companies only have bottles requiring fluid pump. It’s messy

@philobresil6152

3 ай бұрын

Just called today for maintenance and they quoted me 639$ for front and back, i told them thats is exactly why i dont go to the dealer no more.

Thanks to this video I now know this is arguably easier than a standard oil change - no way I’ll pay 300+ bucks for someone else to do it! Thank you!

@wayalife

Жыл бұрын

Happy to hear our video will be helpful to you in the future.

Great video, good angles and lighting, just saved me over $230 bucks! Look forward to watching more , with the money I save I may have to purchase a tee!

Love your channel! Recently bought my first jeep and did my differentials today.

@wayalife

3 жыл бұрын

That is awesome!

Thanks to you I change the oil on my JLU and I'll be changing my diff fluids as well now! Keep these videos coming!

@wayalife

5 жыл бұрын

Awesome, glad to hear we've been able to inspire you to do your own work :)

Great diy vid! Getting new tires put on this week and figured I may as well change out the engine oil and differential while I’m at it. Found this vid on the JLWrangler forum. You rock!

@wayalife

3 жыл бұрын

Awesome! So glad that our video will be useful to you 👍

I had no idea it was that easy! Thanks for posting - now I should go do mine!

@wayalife

5 жыл бұрын

Oh yeah, it'd be a crime to pay someone to do it for you.

Keep it up, be as clear on details because I see other videos, but you're the one I trust when I'm having trouble finding answers.

@wayalife

7 ай бұрын

Happy to hear our videos have been helpful to you 😎

Thank you for the video!! Saving us money with every view good sir! A local shop wanted to charge me 369 for front and rear! After watching your video.. I can EASILY tackle this myself! Thank you!

@wayalife

2 жыл бұрын

Glad I could help 👍

I’ve Poison Spyder differential covers staring at me right now. They’re right there and this video pops up. Thanks, thanks a lot Eddie. My Saturday is now shot...😝 Awesome video as always!

Awesome video! But always make sure the fill plug comes out first before pulling the drain plug 👍

@MindisJurenas

Жыл бұрын

Why is that important? Curious..

@mturzanski

Жыл бұрын

@Mindis Jurenas encase the fill plug gets stuck or rusted in, ie something goes wrong. Now you've drained all your fluid out and can't get it back in! Being around old farm trucks and heavy duty equipment taught me this lol its not un-heard of.

@MindisJurenas

Жыл бұрын

@@mturzanski copy that and good to keep that in mind, I just changed my diff fluids without any issues, Jeep is still somewhat new..

@mturzanski

Жыл бұрын

@Mindis yeaman I totally understand my jeep is fairly new aswell . weird stuff happens. It would suck if it was rusty, overtorqued, if it stripped, etc. But it's great to see someone changing driveline fluids. Imagine how many vehicles have never had the diff fluid changed ever. I've changed the fluid a few times in some of the oilwellservicing rigs and support trucks at work its crazy how much moisture can accumulate in 1-2 years Good on ya👍

Thank you! Very helpful. I’m out in Colorado and noticed a small/slow diff leak. You helped me top it off till I can get it fixed here or back at home.

@wayalife

2 жыл бұрын

Glad it helped

Great video! Just changed both front and rear diffs like a pro. I bet that saved me at least $200! Yellow Teflon was another great tip that I would of missed on my own. Thank you!

@wayalife

4 жыл бұрын

Awesome!

I’m new to the Jeep community, and have been watching tones of video. I’m a female who loves doing vehicles maintenance myself. I know my 21 year old truck like the back of my hand, with my Jeep it’s like leaving things all over again. Looks like I’ll be serving the differential fluid on Thursday. Oil, oil filter, and both air filters changed this afternoon. I’m only 5’2” and had to stand on the bumper to reach the oil cap and oil filter and one screw on the air filter case. I swear I need a extension ladder to work on my Jeep. 🤣

Thank you this! I have a 2008 Wrangler X and all 4 axel seals are slowly leaking. I can’t affort to fix them for a few months (retired old man on fixed income) so I’m trying to make sure the levels are good till I can!

As always nice production and camera work and excellent explanation of work being done servicing your Jeep JL.

@wayalife

5 жыл бұрын

Thank you, we're so glad that you found our video useful.

I'm glad I looked into this. My jeep is in for scheduled maintenance and they wanted 265 to switch out rear differential fluid.

@wayalife

2 жыл бұрын

Glad we could be of help!

Anything you post hast and it won’t disappoint anyone love ur work eddi

@wayalife

5 жыл бұрын

Thank you :)

Simplicity and helpful at its finest brotha, thank you kindly! I will be subscribing and watching more of your DIY vids!

@wayalife

2 жыл бұрын

Awesome, thank you!

Great video! Thanks for the insight!

@wayalife

3 жыл бұрын

Glad it was helpful!

Thank you so much for this video. My local dealer wanted 240 per axel to do this. Yikes!!

@wayalife

4 жыл бұрын

Yikes is right! Glad we could be of help to you.

@robbdc1

3 жыл бұрын

Mine is asking $280, so here I am watching videos on how to do it. Great video, thank you for posting!

@prazmeej7972

2 жыл бұрын

My dealership asked for 619 for Both me 250 for beaker fluid! Also other videos were showing to clean the differential while this video does not. Do we need to spray the differential to clean it?

@alexmckoy8221

2 жыл бұрын

@@prazmeej7972 If you already pulled the cover might as well spray everything down with break cleaner while you’re there.

@2011lafayette

Жыл бұрын

That is so simple . I thought we had to remove the cover and put new gaskets .thanks for the video .

Glad I found your channel. Dealerships are getting way too pricey and look to start to do my own thanks to your videos. Definitively save me alot of money. Enjoy how thorough you are and how easy you make it.

@wayalife

19 күн бұрын

Happy to hear our video was helpful to you!

Awesome video! You guys always kill it! This video makes me feel confident to do my own.

@wayalife

3 ай бұрын

Happy to hear our video was helpful to you and yes, you can totally do this 👍

Thank You for another informative video. I really appreciate it when you do this type of video. Keep it up!

@wayalife

5 жыл бұрын

Awesome, glad to hear it was helpful to you.

Great video! Wanted to say thank you! Just did mine this afternoon. With costs being what they are these days, if I can do it(with some guidance)I will. Next, transfer case! Thanks again! 😎👍🏻🇨🇦

@wayalife

2 ай бұрын

Glad it helped! :)

Another awesome and informative Jeep video. Thank you for the info and the great camera angles showing it all clearly

@wayalife

5 жыл бұрын

Glad we could be of help. Again, doing this on the ground is the best way to do it but racking our JL does help to get the camera angles we needed. :)

Differential oil 75w90 oil Free air Outstanding job thanks

Thanks for this video! I'm still new to owning a wrangler but my dealership quoted me just over 1,000 to do this..its a 2020 wrangler sport and I don't drive it much to start with. This video is super easy to understand. Thanks a ton!

@wayalife

5 ай бұрын

Glad it helped you out!

Another very helpful video Eddie. Seeing some of the comments re: dealer and independent service department estimates on this simple service makes me wonder if the concept of honesty has been totally lost on the industry. Great job showing us how easy it is to do on our own!

@wayalife

4 ай бұрын

Happy to hear our video was helpful to you.

Honestly this was such a great video to follow, great job

@wayalife

Жыл бұрын

Glad to hear it was helpful to you :)

Thanks again for all your help!

@wayalife

5 жыл бұрын

Glad that we could be of help :)

Good info as always Eddie! Thanks!

@wayalife

5 жыл бұрын

All we ever hope to do is help where we can :)

Just knocked it out on my Gladiator. Didn't even need to jack up the truck and it felt easier than an engine oil change. Excellent tutorial for 1st timer attempting to doing own maintenance at a fraction of the price the dealer/shop would charge.

@wayalife

4 ай бұрын

Happy to hear our video was helpful to you 👍

Thank you for sharing, I'll be doing this soon, as I was playing out and about in the water.

@wayalife

Жыл бұрын

Glad we could be of help with this.

Good video, to the point and clear. Now, please make the same video for the transfer case on your JLU. Keep 'em rolling!

@wayalife

4 жыл бұрын

Sure, that's something on the to do list :)

Great video, thank you!

Of course a "thumbs up"! I get SO excited when you post a new video! Thanks for all you do!

@wayalife

5 жыл бұрын

LOL - we appreciate it :)

Thank you!! I love your shop!

@wayalife

Жыл бұрын

Glad you enjoy it and thanks!

I knew what was coming and I still chuckled. 😀😀😀😀

@wayalife

Жыл бұрын

LOL - awesome

Thank you bro , great as always , keep going 🤩👍🏻👍🏻👍🏻

@wayalife

Жыл бұрын

Glad to hear our video was useful to you.

It's nice to watch someone do this where the drain and fill plugs are not all rusted up like up here in the North East, I've had to heat mine up with a torch to get them to break loose.

@wayalife

2 жыл бұрын

We once bought a Jeep from a friend that lives in Buffalo, NY. I don't know how any of you out there do it.

I’m a kid inside when it comes to those funny sounds too my man!! 🤣🤣 impossible for me to keep a straight face. Great vid bro thank you!!

@wayalife

8 ай бұрын

LOL

So easy to do thanks for the video.

@wayalife

5 жыл бұрын

Glad we could show just how easy it really is to do :)

Thank you for another great video!

@wayalife

4 жыл бұрын

You bet! Glad we could be of help to you :)

This videos are great, thanks!

@wayalife

Жыл бұрын

Glad you like them!

As always great vid!

@wayalife

5 жыл бұрын

Glad to hear you found this to be helpful :)

I've never used the Teflon tape on my Tj Rubicon axles but it certainly makes sense! Thanks

@wayalife

5 жыл бұрын

Just make sure to use the yellow one as white will just fall apart from the gear oil.

@tytt4594

5 жыл бұрын

Wayalife what about orange?

thank you for another great video

@wayalife

3 жыл бұрын

Glad we could help out :)

I was just rewatching your Sema coverage to check out the Rugged Ridge shaved fenders again. I’m hoping they will make them. Also awesome and helpful video.

@wayalife

5 жыл бұрын

I'm still bugging them about it :)

@Usernotfoun85

5 жыл бұрын

Wayalife, here is the link to get your very own Gladiator Multi-tool. www.gear.jeep.com/catalog/product/view/id/28537/s/gladiator-multi-tool-and-brochure/

Your video was very helpful....thank you wayalife....that sound was funny 😆😆and laughed when I did mine.

@wayalife

2 жыл бұрын

LOL - awesome! Glad to hear it was helpful to you and that it made you laugh when you did it 😁

Thank you for this video.

@wayalife

4 жыл бұрын

You bet!

great video, information and presentation was perfect - new subscriber

@wayalife

2 жыл бұрын

Awesome, thank you!

Sweet US Indy Mags on the light blue Jeep in the back ground

Good video! Much appreciated

@wayalife

5 жыл бұрын

Thanks! Glad you found it to be helpful :)

Kid or adult who could keep a straight face when they heard that. Lol 😂

@wayalife

5 жыл бұрын

LOL - it's pretty much impossible.

@DeanJohnson67

4 жыл бұрын

when a person stops finding this sort of thing amusing -- well that's a sad day that I hope never happens to me! 53+ and counting and It still makes me laugh! ;)

Great video! Never done a diff fluid change before but watching this looks super easy. I want to do all the easy maintenance myself on my new JL rubicon. Interesting how the M220 rear axle asks for 75W85 in the rear instead of the 75W140 I was expecting. I guess this makes it easier both front and rear taking the same. I have a ways to go before any of this is needed but saving for future use. Thank you!

@wayalife

4 ай бұрын

No need to run a heavier oil unless you've regeared.

@WreckedBrewery

4 ай бұрын

@@wayalife I'm base Rubicon 4.10

Just did fluid drain n fill on my 13' JK 2 days ago. I actually googled it and found your old write-up. I never knew that there was a drain plug on the axles. I did a complete cover reseal the first couple times without noticing it. I do prefer the tucked up drain plugs on the JK axles though, the JL look abit risky.

@wayalife

5 жыл бұрын

Yeah, the front diff plug is lame. The rear is just like a JK. Glad to hear you found my old write up :)

Can't tell you how much I appreciate your channel. Used to be intimidated by this stuff. But after countless encounters with shops that just didn't care about the quality of their work...I decided to learn and do for myself... the RIGHT way. And saving $$$ is always a plus. Thanks again.

@wayalife

Жыл бұрын

Awesome! So happy to hear that our videos have been helpful to you. :)

Great vid, thanks.

@wayalife

3 жыл бұрын

Glad you liked it!

Fantastic tutorial. Just got back from a DIY shop and did this myself thanks to the the information provided here. Tried so hard not to laugh while squeezing that royal purple but all I could picture was Eddie laughing at the noises so I couldn't help it! I put 75W140 in the rear since we do a fair amount of off-road driving and occasional towing. A dealer in Vegas did the engine oil change for me while we were on a long road trip and quoted me $1200 for engine oil, diffs, and transmission. Utterly ridiculous. I let him do the oil but I did the rest myself for $299.45 all in and 1.5 hrs of labor.

@wayalife

2 жыл бұрын

LOL - so glad that we could be of help to you 😎

I literally LOL when he was squeezing the Royal Purple bottle hahaha

Is it wrong that I am addicted to watching your videos on processes that I already know how to do and yet I still feel the need to fact check myself? And then to comment on said videos some three years. Which means I am watching it AGAIN?! HaHa. Thanks Eddie and Cindy!

@wayalife

Жыл бұрын

LOL - glad to hear you can still enjoy our videos in spite of you knowing what to do 😁

Wow! Great video. Was told i have too take diff covers off to clean them out.

@wayalife

7 ай бұрын

On older Jeeps without a drain plug, you do need to pull the covers. In fact, on newer Jeeps, the drain plugs have been removed and you have to do that on them too. Either way, pulling the cover from time to time to inspect the internals is a good idea but it really isn't necessary every single time, especially if you have an axle with the drain plugs.

Thank you brother jl jeeper.

@wayalife

5 жыл бұрын

Glad to be of help :)

Thanks again for a great video to help us save some money and learn more about our Jeeps. It's always better to do it yourself so you know it was done right. When you did a video on changing the transfer case, you used a past. Can I use that same paste for the deff plugs?

@wayalife

Жыл бұрын

Glad to hear you find our videos to be helpful and yes, you can definitely use the same paste. In fact, I would recommend it.

Hey Eddie nice video, thank u for all u do for the Jeep community, I bought the rock gliders because of u and rancho but I was gonna ask, I wish someone would do a light build to keep weight down on jeeps, that don’t want to turn our jeeps into tanks....

@wayalife

5 жыл бұрын

So far, I think our build is about as light as it gets. No rear bumper, shorty front bumper and rocker guards and that's about it.

@carebear2272

5 жыл бұрын

Cool your right, wondering about stuff that’s like alloys, forgot about they way u built yours, guess you can’t replace steel for strength.

You are the best! 🇨🇦😎😊👍🏻

@wayalife

Жыл бұрын

LOL - glad you enjoyed the video.

Wow. My dealer wanted to charge me $300 an axle to do this. Thank you!

@wayalife

Жыл бұрын

Glad that we could be of help to you with our video :)

Thanks!

@wayalife

Ай бұрын

Thank you!

Thanks for the drain bolt part #

@wayalife

2 жыл бұрын

You bet! That thing was hard to figure out. Fortunately, I have friends at Jeep who were able to help me out with that.

ive been startin to look at the amsoil bags of oil

Although you didn't mention it, It's good to remind people that the best way to apply the Teflon tape is in the opposite direction of the thread on the bolt, to prevent the lead edge of the tape from unraveling and/or bunching up.

@wayalife

4 жыл бұрын

This is true :)

Thanks for the vid Scanned the comments so I don't think this is a duplicate question: any need to pull the FAD and drain the old gear oil for it?

Man I want a garage like yours

@wayalife

5 жыл бұрын

Took me half a life time to get it :)

Good sound for a jeep, not so much for humans. Awesome video! Keep up the great work!

@wayalife

5 жыл бұрын

LOL - too funny.

Great informative and easy to follow video! Stupid question. Where do I dispose of the drained gear oil?

@wayalife

2 жыл бұрын

Awesome! Glad to hear our video was helpful. You can take your used gear oil to most auto parts stores for recycling.

Oh man - This is incredible! My dealer was trying to charge me $400 to do this, Ill be doing this myself after seeing how simple it is! Thanks a ton!

@wayalife

Жыл бұрын

Awesome! Happy to hear our video was helpful to you. 👍

@willrouse2351

7 ай бұрын

The STEALerships always try to rob you

This video is so clear! I need to start uploading higher resolution videos :- /. Good vid though.

Excellent…!!!

@wayalife

25 күн бұрын

Glad you like it!

Ok I had to double checked the gear oil used , dealer said mopar 75w85 was going to use royal purple as well will use that 75w90 , thanks again , hopefully no issues with it

@wayalife

Жыл бұрын

You be fine 👍

I put a solid axle diff cover on my 8.8. It adds a lot of armor and takes more fluid.

@wayalife

5 жыл бұрын

The Solid diff cover has a higher fill port and that's what allows you to add more fluid. That being said, the port is placed higher to help you to get the proper amount of fluid in the diff after you've set your pinion angle. That does NOT mean you should put in "more fluid". You should always just put in just enough fluid to bring it to the base of the axle tubes. If you put in more than that, you will have over filled it and gear oil will start to pump out the breather tube.

@Metalgearmadness

5 жыл бұрын

Yeah I put a little bit more in there, but not even close to the point where it leaks out of the fill tube.

@6:07 Eddie is definitely "one of those adults" hahaha and apparently so am I bc I cracked up

@wayalife

5 жыл бұрын

LOL - glad to know I'm not the only one :)

Thanks for the chuckle. Looking forward to your 2019 video lineup. Do girls giggle and guys chuckle? Or are they two different things ?

@wayalife

5 жыл бұрын

LOL - glad you enjoyed the video :)

do a video on fluid change in the transfer case....thanks

@wayalife

5 жыл бұрын

signals34 It’s in the works 😎

Just did my diff fluid since I re geared. Was extremely surprised that the front Dana 44 only took a little over 1 quart.

@wayalife

5 жыл бұрын

Yup, that's what the factory service manual calls for.

Great video, whats the secret to get the new fluid in without it leaking all over before getting in the hole? Was gonna use a hose or transfer pump, but u made it look easy…🤔🤷🏼‍♂️

@wayalife

2 жыл бұрын

LOL - put your finger on the hole right up to the point where you put it in the fill hole.

Another great video. Hey, if I may, what brand skids do you have on the rear shock/ lower control arm

@wayalife

6 ай бұрын

We're running Rancho skids amzn.to/47Qs8MC

Haha! And the shops want $300+ per axle for this? Yeah, I'll do it myself. Thanks for the video. The place that did my re-gear said change the fluid every 25K.

@wayalife

Ай бұрын

Oh yeah, there's no way anyone should pay that kind of money for something as easy as this.

Wow! Can't believe it's that easy.

@wayalife

3 жыл бұрын

Yup, that easy or at least, on a JL or JT. Took a lot more work on older Jeeps.

@timothyhacking

3 жыл бұрын

@@wayalife It's criminal what dealers charge to do this.

@wayalife

3 жыл бұрын

@@timothyhacking I couldn't agree more. It's a big part of why I make videos like this. To help others know as much.

@timothyhacking

3 жыл бұрын

@@wayalife I'm about to become a first time Jeep owner. Just waiting on delivery of my 4XE. In the meantime I've been watching your videos and find them very informative. Keep it up!

@wayalife

3 жыл бұрын

Awesome and congratulations to you 👍

Great Vid mate ...love your videos and all the ideas .....what are these shock mount skid plates you got on this JL ?.....looking for some \-/.....would you know what fluid would be needed for the Xetreme Recon 4.56 gear Rubi axles ?.....would like to do a synthetic fluids .

@wayalife

Жыл бұрын

The skids you are looking at are made by Rancho. As far as gear oil goes, any synthetic fluid will get the job done.

Thanks for the video. In your description you mention 75w90, but below you mention 80w90. Which one is best for a 2020 Rubicon with Dana 44s? Also, based on my calculations, it will take just over one bottle to fill each diff, so should three bottles do it for both? Thanks

@wayalife

3 жыл бұрын

You'll be fine with either and yes, about 3 bottles will do the trick.

There is nothing funnier than a fart sound, than being warned of an upcoming fart sound, and you still couldn't keep a straight face. That made me laugh more than the fart sound itself. Hilarious!!!!! Great fun and informative video for sure. Great job!!!

@wayalife

4 жыл бұрын

LOL - glad you enjoyed it :)

Hey anyway you can help us find mudflaps for our 2018 JL Wrangler Rubicon Limited 2 door? Jeesh we can't find anything and living in Iowa we need them!! Love your channel!!!

@wayalife

5 жыл бұрын

Glad you enjoy our channel. As far as mud flaps go, I don't think you'll be able to find anything specific for a Rubicon per se but there are lots of aftermarket options you can use such as this amzn.to/2M0PqGL

How can you find out if your Jeep has Trac-Loc differentials?

My rear differential for my jlru calls for 75w140.

Hey Eddie, love your videos mate. Question, I live in Australia 🇦🇺🐨 and own a 2010 JK. What dif oil would you recommend I use? Your help would be greatly appreciated buddy.. Cheers 🍻

@wayalife

4 жыл бұрын

If you have a limited slip differential, I would recommend using a synthetic oil as it will have friction modifier in it. Otherwise, you should be good to go with old school standard oil.

Thanks for your great videos! Is this an automatic transmission and can we use the same differential fluid in vehicles with both automatic and manual transmissions. Hope to hear from you.

@wayalife

5 ай бұрын

For the axle differentials like you see in this video, you can use the same fluid regardless of transmission.

Great vid. I was looking on my 2021 Rubicon JLU build sheet and it says the front and rear diffs have “Tru-Lock”. I see there is also on some Jeeps “Track Lok”,which you note requires the addition of a friction modifier. Do you know if a TruLok diff requires a friction modifier? Thankyou.

@wayalife

2 жыл бұрын

You only need friction modifier on a differential that has a limited slip in it. If you use a synthetic fluid, it will have it in it already so nothing more is needed.

Hey Eddie, I’m about to do my first diff change ever….I follow your vids and advise (you helped me do my first engine oil change with your vids) so figured I’d ask on the diff fluid. I’m in Canada (not sure if specs are different here, trying to find an direct answer on this) seems pretty popular across the board to use 75w90 up front….but seems a mix of opinions on the back (75w90 v 75w140) Now I found an “up to date” Manual online that seems to indicate 75w140 in the rear with “sales code DRZ”….previously was only if you did heavy towing, but this one doesn’t really indicate that. Hence I’m confused. I don’t tow…but I’d like to make sure I’m putting the correct fluids in….being a jeep guru as yourself do you know of this changing to more a standard 75w140 in the rear? Or are you still recommending the 75w90? I have a 2019 JLU Rubicon again in Canada. Any input would be appreciated. 👍 Edit: just found out DRZ means “Next-Gen” again not sure though if that is tailored to 2019 axels or what. Any help would be appreciated

@wayalife

2 жыл бұрын

Typically, you want to use a heavier gear oil if you do a lot of towing OR if you're running a much higher gear ratio like 5.13 or 5.38. Otherwise, it's not really needed but it won't really harm anything to run a heavier oil too.

@JCx13

2 жыл бұрын

@@wayalife Thanks so much Eddie 🙏 Appreciate the time and quick response brother.

Yellow teflon tape is for gas line applications and is also thicker than regular white teflon tape. Also, if it is a "regular" Wrangler and not a Rubicon with a limited slip differential, it will take a different fluid that is friction friendly..

@wayalife

3 жыл бұрын

I think you meant to say that a limited slip will require friction modifier. With that said, pretty much all synthetic gear oils have friction modifier in them.

@ssnydess6787

3 жыл бұрын

@@wayalife Thank you! Rock on rocks!

@johnnyf6367

7 ай бұрын

@@wayalifeMy jeep has a LSD. If I use synthetic (like Amsoil that says it has modifiers added), do I not need to add any separately?

@wayalife

7 ай бұрын

@@johnnyf6367Nope. Synthetic has friction modifier in it already, just as you have found and stated.