Red Line Limited Slip Differential Friction Modifier & Break-In Additive
Maximize Performance, Protect Your Differential, and Silence Gear Noise.
Looking for the ultimate solution to improve your vehicle’s differential performance? The Red Line Limited Slip Differential Friction Modifier and Break-In Additive is engineered for both road cars and high-performance racing vehicles. This additive offers extreme pressure protection and includes friction modifiers (excluding NS) for optimal limited-slip operation.
Key Benefits:
- Enhanced Protection: Formulated with extreme pressure additives to safeguard your differential under the toughest conditions.
- Noise Reduction: Reduces limited-slip differential plate chatter and unwanted noise for a smoother driving experience.
- Versatile Compatibility: Works seamlessly with both synthetic and petroleum-based gear oils. Specifically effective when combined with Red Line’s NS Gear Oil.
- Tailored Usage: Add 1oz increments to clutch-type limited slip or posi-traction units until chatter is eliminated.
Product Applications:
- Optimal Break-In Support: Perfect for breaking in new differentials, lowering break-in temperatures by up to 50°F.
- Easy Fine-Tuning: Add gradually (1oz at a time) until the ideal friction level is achieved, especially for clutch-type LSDs.
- Precision Formula: Supplied in a 118ml (4 fl. oz) bottle for precise dosing.
Why Choose Red Line Friction Modifier?
- Industry-Leading Expertise: Trusted by car enthusiasts and professional racers alike for premium differential protection.
- OEM Compatibility: For specific application recommendations, explore our ‘OEM Compatibility’ tab below.
Key Features:
- Reduces break-in temperatures by up to 50°F
- Increases slipperiness to prevent LSD plate chatter
- Easily adjustable by adding 1oz at a time
Boost your car’s differential performance with Red Line’s Friction Modifier—experience a smoother, quieter and better-protected drive.
Limited-slip or Positraction units use plates or clutches to provide the proper amount of lock-up to the differential. Slippery lubricants are required to prevent chatter, but too much slipperiness causes excess wheel spin, reducing traction. For perfect traction, use Red Line 75W90NS and add the Red Line Limited-Slip Differential Friction-Modifier / Break-In Additive until the chatter disappears.
Satisfies performance requirements of GM 1052358, Ford M2C118-A, 19B546-MA, Chrysler 4318060 and most imports.
Recommended Dosage:
Use 4% for prevention of limited slip chatter in broken-in units (typical one 4 oz. bottle) or 4 to 8% for the break-in of new differentials.
Red Line Limited-Slip Differential Friction-Modifier / Break-In Additive will significantly reduce the friction during break-in of differentials. High temperatures encountered in break-in can destroy the hardening of the gear teeth causing rapid wear of the softened gears. This additive can reduce the break-in temperatures by as much as 50°F, improving break-in conditions. Compatible with petroleum or synthetic gear oils. Red Line Gear Oils already contain this additive (except the NS).
In non-limited-slip racing differentials and quick-change units using the Red Line ShockProof Gear Oils an additional 3 to 6% Red Line Limited-Slip Differential Friction-Modifier / Break-In Additive is recommended.
