Back to all

Time for Differential Service at Tuffy Tire & Auto Service Powell?

August 20, 2023

Hello Powell - let's talk differentials. If you have a rear-wheel drive vehicle, your differential is on the back axle. With front-wheel drive cars, the differential is up front. All-wheel drive and 4-wheel drive vehicles have three differentials - front, rear and in the middle. So you see, you've got a differential (or two or three) and it needs service now and then.

What does your vehicle differential do? Well, it compensates for the differences in speed between your outer and inner wheels in a turn. Using the dimensions of a typical car, let's compare the distance the wheels travel from the start of a turn through to the completion of the turn.

The inside wheel travels about 12.6 feet/3.8 meters. How much farther does the outside wheel travel? About 18.8 feet/5.7 meters – over 6 feet/1.9 meters more. This means the outer tire has to rotate 9 times in the same amount of time that the inner tire has to rotate only 6 times - so the outer tire has to spin faster in order to keep up. The differential makes this possible.

The gears in the differential are cooled and lubricated by differential fluid. It's this fluid that needs to be serviced. Small bits of the gears break off and are suspended in the differential fluid. The dirtier the fluid, the faster the gears wear.

So your Tuffy Tire & Auto Service Powell technician drains the old fluid out and replaces it with fresh fluid. Some differentials also need a special additive that is put in at this time.

So when should you have your vehicle differential serviced? Intervals vary from vehicle to vehicle – and may be as short as 15,000 miles/24,000 km – so check your vehicle owner's manual or ask us at Tuffy Tire & Auto Service Powell. If you frequently drive with heavy loads, tow a trailer or drive in hot Ohio conditions, you may need to change differential fluid more often. Servicing your differential on schedule at Tuffy Tire & Auto Service Powell can save a pricey replacement down the road.

Give us a call.

Tuffy Tire & Auto Service Powell
7854 Smoky Row Road
Powell, Ohio 43065
614-792-0770
http://www.tuffypowell.com

More articles from Tuffy Powell

Reaching the Braking Point (Brake hose replacement)

March 8, 2026

If you notice your brakes arent working like they used to, thats the kind of thing thats important to have checked out soon. Thats because your brakes are extraordinarily important to the safe operation of your vehicle. Sometimes you feel like your brake pedal is feeling a little soft or its lo... More

Don't Be Fuelish

March 1, 2026

If you smell gasoline in your vehicle, pay attention to your nose. That's because it has an important message for you. Newer vehicles should never have a gasoline smell inside. One of the most dangerous conditions can come when your fuel line system has a leak or multiple leaks. Vehicles with fue... More

Tuffy Tire & Auto Service Powell Alternator Replacement Service in Powell

February 22, 2026

Your vehicle alternator doesn't get enough credit. Though your battery gets your engine started, after that it's all about the alternator. Driving around Powell is a lot of work for your alternator, and as upgrades such as heated steering wheels, cooled seats, stability control and lane depar... More