How To Tell If You Have A Limited Slip Diff

If you're a car enthusiast or just someone who's interested in how cars work, then you've probably heard of a limited slip differential (LSD). An LSD is a type of differential that can provide better handling and traction in certain situations. But how do you know if your car has one? In this article, we'll go through the telltale signs of an LSD and how it differs from an open differential.

What is a Limited Slip Differential?

Before we dive into how to tell if you have an LSD, let's first understand what it is. A differential is a device that allows the wheels on an axle to rotate at different speeds while still providing power to both wheels. An open differential, which is the most common type, allows one wheel to spin freely while the other wheel receives the power. This is fine for normal driving conditions, but it can be a problem when one wheel loses traction, such as in slippery or uneven terrain. This is where an LSD comes in. An LSD limits the amount of slip between the wheels by using a clutch or gear mechanism. This means that even if one wheel loses traction, the other wheel will still receive power and keep the car moving forward. This can be a huge advantage in off-road or high-performance driving situations.

Check Your Owner's Manual

The easiest way to find out if your car has an LSD is to check the owner's manual. The manual should have a section on the drivetrain, which will tell you what type of differential your car has. If you don't have the manual, you can usually find a digital copy online.

Look for Traction Control

If your car has traction control, it's likely that it has an LSD. Traction control is a system that helps prevent wheel spin by applying the brakes to the spinning wheel or reducing engine power. This system works best when paired with an LSD, as it can provide even better traction and handling.

Inspect the Differential Cover

If you're still not sure if your car has an LSD, you can inspect the differential cover. An LSD will usually have a manufacturer's tag or stamp on the cover that indicates it's an LSD. You can also look for a finned cover, which is a common feature on LSDs. The fins help dissipate heat, which can build up during high-performance driving.

Difference in Handling

If you're still not sure if your car has an LSD, you can also tell by the way it handles. An LSD will provide better traction and handling in certain situations, such as when accelerating out of a turn or when driving on slippery terrain. You may notice that the car feels more stable and planted, and that it's easier to maintain control. On the other hand, an open differential can cause the car to spin out or lose control in these situations, as one wheel will be spinning freely while the other receives power. If you're not sure which type of differential your car has, it's always best to err on the side of caution and assume that it's an open differential.

Conclusion

In conclusion, there are several ways to tell if your car has a limited slip differential. You can check the owner's manual, look for traction control, inspect the differential cover, and pay attention to how the car handles. While an LSD can provide better handling and traction in certain situations, it's important to remember that it's not a cure-all for all driving conditions. Always drive safely and within your limits, regardless of what type of differential your car has.