www.cat.com/en_US/products/new... | Preventative maintenance is an important part to the life of your wheel loader. The Cat® M Series family will help make your job a little easier by adding key maintenance interval reminders directly into the optional secondary display. Come take a look as Joel Grimes, Caterpillar product expert, reviews the various reminders built into the display as well as the diesel exhaust fluid (DEF) fill interval.