Red Line LSD/Limited Slip Diff/Differential Friction Modifier Oil - 118ML
Red Line Limited Slip Friction Modifier is an additive that fine-tunes the performance of clutch-p...Red Line Limited Slip Friction Modifier is an additive that fine-tunes the performance of clutch-plate type or positraction limited slip differentials (LSDs). Add 1 oz at a time until chatter is eliminated. This modifier can also be used as a break-in additive to reduce friction and heat in new gears. Temperatures can be reduced up to 10° C (50° F) when the additive is used. It's compatible with mineral and synthetic-based gear oils and reduces oil temperatures during the break-in period. Comes in a 118ml (4oz) bottle. Please refer to the Technical Data Sheet for more details.
Red Line LSD/Limited Slip Diff/Differential Friction Modifier Oil 118MLFree delivery in 1–3 days£17.79Visit shop →
1 x Red Line Limited Slip (LSD) Friction Modifier/Break In Additive - 118mlFree delivery in 1–3 days£17.79Visit shop →
Red Line Limited Slip Differential Friction Modifier - Brake In AdditiveFree delivery in 1–3 days£17.79Visit shop →
Product Information
Full details
The Red Line Limited Slip Friction Modifier is designed for vehicle owners with clutch-plate type or positraction limited slip differentials (LSDs) who experience chatter and want to fine-tune their differential's performance. Its key benefit is reducing differential noise and heat, especially during the critical break-in period for new gears, potentially lowering operating temperatures significantly. A caveat is that it should be added incrementally to avoid over-application.
All features
Model Part Number
80301
Brand
Red Line
Extended Product Information
FAQs
What type of differentials is this product designed for?
This friction modifier is specifically designed for clutch-plate type or positraction limited slip differentials (LSDs).
How much of the Red Line LSD Friction Modifier should I add?
Start by adding 1 oz (approximately 30ml) at a time. Drive the vehicle to allow the additive to mix and assess the results. Continue adding 1 oz increments until the desired reduction in chatter is achieved.
Can I use this product with any type of gear oil?
Yes, it is compatible with both mineral and synthetic-based gear oils.
What is the benefit of using this as a break-in additive?
When used during the break-in of new gears, it reduces friction and heat, which helps the gears seat properly and minimizes initial wear, leading to a potentially quieter and more durable drivetrain.
How much can this product reduce oil temperatures?
When used as a break-in additive, it can reduce gear oil temperatures by up to 10° C (50° F).
What is the bottle size?
The bottle contains 118ml (4oz) of the friction modifier.
Is this product a gear oil itself?
No, this is an additive designed to be mixed with your existing compatible gear oil. It is not a standalone lubricant.
Troubleshooting
Differential chatter persists after adding the modifier.
Add another 1 oz (approx. 30ml) of the friction modifier. It may take multiple small additions to reach the optimal level for your specific differential. Ensure the additive has had sufficient time to mix with the gear oil.
New chatter or noise appears after adding the modifier.
You may have added too much. In this case, the additive's concentration might be too high, potentially causing clutch slippage. It's best to drain some of the gear oil and re-add following the incremental steps carefully. Consult a professional if unsure.
Difficulty pouring the additive into the differential.
Use a fluid transfer pump or a flexible hose to inject the additive into the differential fill hole. Ensure you measure the amount accurately before adding.
Pros and Cons
Pros
Effectively eliminates or reduces LSD chatter.
Improves overall performance and smoothness of limited slip differentials.
Assists in breaking in new gears, reducing initial friction and heat.
Can significantly lower operating temperatures, extending component life.
Compatible with a wide range of gear oils (mineral and synthetic).
Cons
Requires careful, incremental addition to achieve desired results.
Not intended as a standalone gear oil; it's an additive.
May require trial-and-error to find the perfect amount for a specific vehicle.
Setup, Compatibility & Care
Setup and Use:
Determine Need: Assess if your vehicle has a clutch-plate type or positraction limited slip differential and if chatter or excessive heat is an issue.
Incremental Addition: Add the modifier to your differential's gear oil one ounce (approx. 30ml) at a time.
Test: Drive the vehicle to allow the additive to mix and observe if the chatter is reduced or eliminated.
Repeat if Necessary: Continue adding 1 oz at a time until the desired performance is achieved. Avoid over-application.
Compatibility:
Compatible with both mineral-based and synthetic-based gear oils.
Designed for clutch-plate type or positraction limited slip differentials (LSDs).
Care:
Store the bottle in a cool, dry place away from direct sunlight.
Ensure the cap is securely fastened after each use to prevent contamination and evaporation.
Refer to the product's Technical Data Sheet for any specific handling recommendations.