Gearing Up (Differential Fluid Service)
December 14, 2025
You may have never thought about it, but when you turn a corner, the wheels on one side of your vehicle turn at a different speed than the other side. What is this magic? The answer is something called the differential.
A differential is a gear box placed between the drive wheels and needs lubrication to work. Over time, that fluid can become contaminated, reducing its effectiveness. You likely won’t be able to detect any signs that it’s happening, though it may get a little noisier over time.
If you continue to drive with contaminated and degraded differential fluid, the gears may wear prematurely. That can also contribute to excess wear on the drive-wheel tires.
Two-wheel drive vehicles have one differential while all-wheel and 4-wheel drive vehicles will have two or three. Your vehicle’s manufacturer has guidelines on how often you should have the differential fluid changed, and we recommend you follow those.
Changing the differential fluid is different depending on what model and year of vehicle you own. Some have a drain plug so the fluid can be removed and replaced. In others, a cover and gasket on the differential will have to be removed and replaced.
Because differentials have constantly moving parts, they generate heat. That’s why some have a vent to help dissipate the heat caused by friction, and sometimes that vent will need replacing.
When you bring your vehicle in for differential fluid replacement, our technician will also inspect the differential for other issues and test drive it to make sure it’s operating the way it should.
Tire Warehouse Depot
250 N. Lapeer Rd.
Lake Orion, Michigan 48362
248-929-0699
Need Service?
More articles from Tire Warehouse Depot

A Most Important Part (Serpentine Belt Replacement)
March 8, 2026
Your vehicles engine is an engineering work of wonder with many complex parts working in harmony to get you down the road. One of those simple but important components is called a serpentine belt. It is driven by a pulley on the engine and transfers that power to many of your engines most importa... More

Stop! And See Us (Brake Pad Replacement)
March 1, 2026
If youve ever driven a bicycle with hand brakes, youll probably understand how the brake pads on your vehicle work. Bicycle brakes use a system that squeezes the bike wheels rim with a pair of cushioned pads activated by your hand squeezing the hand brakes on your handlebars. The friction of tho... More

Steer Clear (Power Steering Pump Replacement)
February 22, 2026
When it comes to ease and precision of steering, todays vehicles are engineering marvels. One of the keys to just how good steering is lies in the refinement of power-assisted steering which we know simply as power steering. At the heart of the system is an electrically or belt-driven power ste... More
