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⚡ Silence the chatter, unleash the power.
Red Line 80301 Limited Slip Friction Modifier is a premium 4-ounce additive designed to enhance differential efficiency by reducing wear, extending oil drain intervals, and eliminating noise in limited-slip and posi-traction units. Engineered with a high viscosity-index formula compatible with synthetic and petroleum gear oils, it delivers consistent performance across temperature variations. Trusted since 1979, this product is a go-to solution for professionals seeking reliable, long-lasting drivetrain smoothness.
| ASIN | B000CPCBGE |
| Best Sellers Rank | 12,387 in Automotive ( See Top 100 in Automotive ) 6 in Agricultural Vehicle Oils & Fluids |
| Brand | Red Line |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.6 out of 5 stars 284 Reviews |
| Global Trade Identification Number | 00083522803014 |
| Item Form | Oil |
| Liquid Volume | 4 Fluid Ounces |
| Liquid volume | 4 Fluid Ounces |
| Lower Temperature Rating | 10 Degrees Celsius |
| Manufacturer | Red Line |
| Material | Polytetrafluoroethylene |
| Package information | Bottle |
| Recommended Uses For Product | Automotive |
| Recommended uses for product | Automotive |
| Specific Uses For Product | Limited-slip differential friction modification and break-in |
| UPC | 083522803014 |
| Unit Count | 4.0 millilitre |
| Upper Temperature Rating | 400 Degrees Fahrenheit |
| Viscosity | High |
J**.
Worked a treat!
I fitted a limited slip differential gearbox to my mini which creaked and moaned and groaned when turning slowly. Added half a bottle of this to the oil in the gearbox and the problem was gone instantly.
G**E
Brillant stuff will buy again
Bought this as I have a Drexler plated diff and I’ve purchased various top brand gearbox oils but still had slight noise and chatter going round very tight corners. So I put in normal 75w 85 oil in and added a ounce at a time until noise and chatter had gone, I can say it has no noise what so ever and this is a brilliant product.
A**R
works well
worked well stopped my lsd knocking
C**C
Perfect
Did the job
L**R
Didn’t work for me at all
Didn’t really make any difference to my jeep differential.
Trustpilot
3 days ago
1 week ago