Back to all

Vive la Differential at Courtesy Auto Repair Plus in Tiffin

May 16, 2017

There are a lot of drivers in Tiffin who are due for a differential service, but had never heard of a differential before. With front-wheel drive being so common in Ohio these days, the differential is just taken care of during a transmission service, so most Tiffin folks don't even have to think about it. And rear-wheel drive differentials don't need to be serviced for years, so it's understandable that it's not something on the top of your mind. It's not uncommon for people in Tiffin to not know they have a differential, let alone know that it needs service.

To better understand what a differential does, think about a track at any Ohio high school. There are lanes marked off on the track. For the longer distance races, the starting lines are staggered. The starting lines for the outside lanes are ahead of the starting lines for the inside lanes. That's to compensate for the longer length of the outside lanes. Staggering the starting lines means that each runner has the same distance to run.

The differential compensates for the difference in speeds between the inside vehicle wheel and the outside wheel in a turn, because they have to travel together through slightly different distances.

It's a very important function. When you think of it, all the power to get a vehicle moving goes through the differential. Most cars weigh between 3,000 and 6,000 pounds (1,400 and 2,800 kg) – trucks even more. The power from the engine goes through the transmission and then through the differential to the drive wheels.

That's a lot of work and requires very heavy duty parts. And those parts need protection. The differential fluid lubricates the gears in the differential and keeps them cool. The fluid eventually gets dirty and worn down. Some kinds of differentials require special additives that break down over time. So manufacturers recommend intervals for when to replace your differential fluid.

Your knowledgeable Courtesy Auto Repair Plus service technician will drain the used fluid and check it out for metal bits, which could be a sign of excessive wear on the gears. He'll then replace the fluid and install the additives if necessary.

Your Courtesy Auto Repair Plus service advisor can look up the vehicle manufacturer's recommended service interval or you can check your owner's manual.

At Courtesy Auto Repair Plus, we've been providing quality automotive service for our valued Tiffin customers since . If you need to schedule differential maintenance, or any other automotive service, give us a call at 419-443-0797.

Courtesy Auto Repair Plus
967 Bon Air Ave
Tiffin, Ohio 44883
419-443-0797
http://www.courtesyautorepairplus.com

More articles from Courtesy Auto Repair Plus

Ball Joint Replacement

August 30, 2026

Think about this the next time youre driving. Your front wheels can steer your vehicle and, at the same time, the wheels can move, even with all the irregularities in the road moving them up, down and in different directions. Pretty amazing engineering, wouldnt you say? What allows that are part... More

In That Case… (Transfer Case Exchange)

August 23, 2026

Ever wonder how all-wheel-drive or 4-wheel-drive vehicles get the power from the engine to the front and rear wheels? The magic happens in what's called a transfer case. In some all-wheel-drive vehicles, it's sometime called a power take-off unit, or PTU. Inside the transfer case is a set of ge... More

Don’t Ignore the Grind

August 16, 2026

Your wheel hub assembly is probably not one of those things on your vehicle you think about very often. In fact, you may not even have even heard of it. But its one of the most important components that keeps your vehicle stable, smooth and safe on the road. The hub assembly houses the wheel b... More