How Much Limited Slip Additive to Add: A Guide for Optimal Performance.

Published by Dustin Babich on

Add one bottle (4-ounces) of limited-slip additive to the differential, or the amount specified by the manufacturer, whichever is higher. When changing the differential oil, many people are unsure about how much limited slip additive to add.

Limited-slip or positraction differentials have special requirements that must be met to function correctly, which is why it is essential to add the correct amount of limited slip additive to the differential. This friction modifying additive ensures that both wheels receive equal power, providing better traction and stability.

In this article, we will discuss the importance of limited slip additive, how much to add, and the signs indicating limited slip additive is required.

Understanding Limited Slip Differential

Limited slip differential is a type of differential that helps in distributing power to the wheels. It is designed to ensure that wheels can turn at different speeds, allowing for better handling and traction. A limited slip differential works by employing clutch packs, springs or gear systems to control the movement of the wheels.

There are different types of limited slip differentials, such as the viscous lsd, helical lsd and clutch type lsd. To get optimal performance, you need to add limited slip additive to your differential. Usually, 2-4 ounces of additive per quart of gear oil is recommended, but this can vary depending on the make and model of your vehicle.

It is always advisable to consult your owner’s manual or a professional mechanic for guidance on how much additive to add.

Importance Of Limited Slip Differential Additives

Limited slip differential (lsd) additive is crucial for optimal performance, as it helps protect the differential and enhance overall performance. Not using an additive can lead to damage and wear on the differential. The lsd additive creates friction and prevents excessive wheel spin, which improves traction and vehicle control.

This friction also means that the lsd additive can help extend the life of the differential by reducing wear and tear. When adding the lsd additive, it is important to follow the manufacturer’s recommendations and add the appropriate amount for your specific vehicle and driving conditions.

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Remember, by adding this simple but essential additive, you can significantly improve your driving experience and extend the life of your vehicle’s differential.

How Much Limited Slip Additive To Add

When adding limited slip additive to your vehicle, there are a few factors to consider. The type of differential, the gear oil used, and the intended use of the vehicle all play a role in determining the recommended amount of additive.

To measure and add the additive, begin by draining the old gear oil and refilling with the recommended amount of oil and additive. Be sure to follow the manufacturer’s instructions and use the right tools. Adding too much additive can cause damage, while not using enough can reduce the effectiveness of the limited slip differential.

By following this guide, you can ensure optimal performance and prolong the life of your vehicle’s differential.

Benefits Of Properly Adding Limited Slip Additive

Properly adding limited slip additive to your differential provides various benefits. Adding the right amount of additive improves traction, enabling better handling and control of your vehicle. Additionally, it reduces wear and tear on your differential, increasing its lifespan. By avoiding costly repairs, you save money in the long run.

It’s important to note that improper additive use can cause more harm than good. Therefore, it’s crucial to follow the recommended guidelines for optimal performance. Overall, adding limited slip additive leads to a safer, more efficient and cost-effective driving experience.

Common Issues With Lsd Additive

Overusing limited slip additive can cause more harm than good, leading to costly repairs. In addition, some differentials are incompatible with certain additives, which can damage the differential system and compromise its performance. Misdiagnosing differential issues is another common problem faced by car owners who try to fix them using limited slip additive.

To avoid these issues, it’s important to add the correct amount of additive recommended by the manufacturer, and to check the compatibility of the additive with your car’s differential before use. If you suspect a problem with your differential, it’s always best to get it inspected by a professional mechanic.

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Following these guidelines can ensure optimal performance of your car’s differential system and prevent costly repairs.

Frequently Asked Questions On How Much Limited Slip Additive To Add

How Much Limited Slip Additive Should I Add?

The amount of limited slip additive to add depends on the type of differential oil and manufacturer’s recommendations.

Do I Need To Add Limited Slip Additive To My Differential?

You need to add limited slip additive if your differential uses a friction modifier or if recommended by the manufacturer.

What Happens If I Add Too Much Limited Slip Additive?

Adding too much limited slip additive can cause clutch plates to slip, leading to excessive wear, decreased performance, and potential damage.


The limited slip additive is an integral component of any vehicle’s axle lubricant. It helps improve the grip and traction of the wheels, ensuring a smooth and safe ride. However, determining the right amount of additive can be a bit tricky, and it requires careful consideration of multiple factors.

In this blog post, we’ve explored various methods of determining the right quantity of limited slip additive. We’ve also discussed the consequences of adding too much or too little additive. By now, you should have a good understanding of how much limited slip additive to add to your vehicle’s axle lubricant.

Remember that using the right amount will not only improve the performance but will also extend the lifespan of your vehicle’s drivetrain components. So always make sure to follow the instructions provided by the manufacturer and seek professional assistance if necessary.

Thank you for reading, and we hope you found this guide helpful.

Dustin Babich

Dustin Babich

Dustin Babich

As the passionate author behind, Dustin Babich is a knowledgeable expert in all things automotive. With a deep understanding of car tools, equipment, engines, and troubleshooting techniques, Dustin Babich shares invaluable insights, practical tips, and effective solutions to empower readers in overcoming car-related challenges.


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