Find Parts That Fit
Red Line 75W90NS Gear Oil - Quart
$305.88
Not sure it fits? Ask our fitment team — we check before it ships.
$305.88
$305.88
Tech Specs
- Brand
- Red Line
- SKU
- RED58304
- Manufacturer part number
- 58304
- Category
- Oils & Oil Filters › Gear Oils
- Shipping weight
- 25.2 lb
- Availability
- Stocked
- EPA
- N/A
Helps with lock-up on weak limited-slip differentials-compatible with Red Line Limited Slip Friction Modifier for tuning slippage
- Helps with lock-up on weak limited-slip differentials-compatible with Red Line Limited Slip Friction Modifier for tuning slippage
- Designed for transmissions and transaxles - helps to slow synchros for easier shifting across a broad temperature range
- Contains extreme pressure additives like our 75W90 GL-5 oil, but lacks friction modifiers to balance slipperiness
- Muscle Car applications like Ford Top Loader, Muncie transmissions, Borg-Warner T-10 and Super T-10
- Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E and SAE J2360
- Non corrosive formula, safe for use with all synchro materials
- Also used with clutch-type LSDs in racing for maximum lock up
- Improved copper corrosion protection to prolong synchro life
- Popular in Ferrari, Porsche and Subaru transaxles
Related Tech Articles
How to Choose a Big Brake Kit Without Overbuying
A big brake kit doesn't shorten your stopping distance — tires do. What it actually buys is heat capacity and pedal consistency. How to choose rotor diameter, piston area and pad compound, and when fluid and pads are the smarter spend.
Where Exhaust Power Actually Comes From
Almost every cat-back horsepower claim online is unsourced. Here's what an independent dyno test actually measured, why scavenging lives in the headers and not the cat-back, and where the power really is on a turbo car.
Coilovers vs Lowering Springs: How to Actually Decide
Both lower the car — but the decision is really about the damper. Why stock dampers and aftermarket spring rates fight each other, when springs are genuinely the right call, and what each path costs you beyond the parts.
- Choosing a selection results in a full page refresh.
- Opens in a new window.