Back to all

Vive la Differential at Charlie's Fast Lube Anna in Anna

May 21, 2023

There are a lot of drivers in Anna who are due for a differential service, but had never heard of a differential before. With front-wheel drive being so common in Illinois these days, the differential is just taken care of during a transmission service, so most Anna 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 Anna 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 Illinois 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 Charlie's Fast Lube Anna 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 Charlie's Fast Lube Anna service advisor can look up the vehicle manufacturer's recommended service interval or you can check your owner's manual.

At Charlie's Fast Lube Anna, we've been providing quality automotive service for our valued Anna customers since . If you need to schedule differential maintenance, or any other automotive service, give us a call at 618-833-4999.

Charlie's Fast Lube Anna
1215 East Vienna St.
Anna, Illinois 62906
618-833-4999
http://www.charliesfastlubeanna.com

Need Service?

Request a Quote

More articles from Charlie's Fast Lube Anna

Road Trip? Check! (Trip Inspection)

October 12, 2025

After months of postponing travel far away from home, a lot of us can't wait to hit the road and scream "Road Trip!" again. But how long has it been since the vehicle you're planning on taking has had a thorough inspection? And is it roadworthy for several days on the highway? Time to schedule a... More

Muffler: Victim of Winter (Muffler Repair)

October 5, 2025

So you almost got through the winter until, one day, your muffler started sounding like a dragster, loud and obnoxious. It's not surprising. All that road salt and brine can cause rust to punch holes in a muffler, and that should raise a big, red warning flag about the safety of your vehicle. O... More

Beware of Potholes! (Avoiding Pothole Damage)

September 28, 2025

You may live in a region where roads become pockmarked with craters known better as potholes. They're caused by moisture seeping through a compromised road surface that can freeze, expand and literally punch holes in the road. And when your vehicle hits one of those holes that's big enough, the... More