Red Line Synthetic 75W90NS Manual Transmission Fluid 1 Quart
If you’ve ever tried to bang gears in your Corvette on a cold morning and felt like the shifter was full of peanut butter, this gear oil is the fix you’ve been missing. This stuff is designed specifically to help your synchros grab the way they’re supposed to, so instead of crunching your way into second like a rookie, you get smooth, confident shifts no matter the temperature. It’s built for serious transmissions and transaxles, from Corvette to Ferrari, and it brings the same extreme-pressure protection as a GL-5 without all the slippery friction modifiers that make synchros act goofy. It also gives your copper synchro rings better protection and even helps tighten up weak limited-slip differentials. Whether your Corvette is high-mileage, freshly rebuilt, raced hard, or just driven like you mean it, this oil helps it shift the way a proper performance car should.
- Corvette-ready gear oil designed for smooth, consistent shifting
- Optimized friction level for proper synchro engagement
- Protects synchros with improved copper corrosion resistance
- Works across a wide temperature range for cold and hot performance
- Compatible with limited-slip tuning using friction modifier
- Ideal for GL-5, GL-6, MT-1 and performance manual transmissions
- Helps reduce gear noise and improve shift feel in aging transmissions
Also known under these part numbers: (For reference only)