Quality Auto Electric & Repair
2802 Kent-Des Moines Rd, Des Moines, WA 98198 (206) 878-0228

Simple Answers from Quality Auto Electric & Repair for Des Moines: Differential Service

Last Updated: Jul 01, 2025

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Question:
What is a differential and why do Des Moines drivers need to have it serviced?

Quality Auto Electric & Repair Answer:
First of all – your vehicle does have a differential. If it's a rear wheel drive, your differential is on the back. If it's front wheel drive, your differential is built into your transaxle (transmission). Des Moines drivers with all wheel drive or four wheel drive will have differentials front and rear and maybe one in between.

When you are steering through a turn at an intersection in Des Moines, the wheels on the outside of the vehicle have to spin faster than the inside wheels because they have to travel a slightly longer distant through the curve. The differential compensates for these speed differences between the wheels.

Because it is part of the equipment that transfers engine power to the wheels, the differential is working pretty hard. Differential fluid – a special heavy-duty oil – cools, lubricates and protects the differential. It needs to be replaced on a schedule to remove metal shavings and other contaminants. Note: if you have a front wheel drive vehicle, replacing your transmission fluid takes care of your differential service needs.

Differentials have become increasingly sophisticated for Des Moines drivers. Rather than the simple mechanical devices of yesteryear, they are more complicated and may actually be part of the computer controlled vehicle stability system. This means they are more taxed, so it pays for Des Moines drivers to have them serviced on schedule at Quality Auto Electric & Repair in Des Moines to avoid premature wear. Talk to your friendly and knowledgeable pros at Quality Auto Electric & Repair.

Give us a call.

Quality Auto Electric & Repair
2802 Kent-Des Moines Rd
Des Moines, WA 98198
(206) 878-0228

At Quality Auto Electric & Repair we install quality NAPA replacement parts.