What is a differential on a car?
Differentials are found in two-wheel drive and four-wheel drive pickup trucks and SUV’s, as well as in rear wheel driver passenger cars and vans. Although periodic replacement of the gear oil is specified by vehicle manufacturers to maintain the performance and longevity of the differential, this is probably the most commonly overlooked service in personal transportation.
With the growing number of pickup trucks and SUV’s on the road, it is important that differential fluid service gets the attention it deserves, especially under severe service driving conditions such as heavy loads, high temperatures and stop-and-go driving.
Overextended differential fluid service intervals can:
- Lead to gear oil breakdown
- Cause poor differential performance and noise
- Allow excessive wear and corrosion of gears and internally lubricated parts
- Contribute to premature differential failure and replacement
Complete replacement of the differential fluid in accordance with manufacturer recommended intervals:
- Extends differential component life
- Provides superior protection especially under extreme conditions
- Protects against friction, wear and corrosion
For safety and the life of your vehicle, make sure a differential fluid service is part of your normal maintenance schedule. Many vehicle manufacturers recommend changing differential gear oil as often as 15,000 – 30,000 miles. Manufacturer’s recommendations may vary. See your owner’s manual for your vehicle’s requirement.