Since most GL-5 gear oils for differentials are too slippery for manual transmissions, Red Line offers these products that ensure proper shifting while providing ultimate wear protection Appropriate coefficient of friction for most manual transmission synchronizers (other's synthetic gear oils are often too slippery for proper synchro engagement) Red Line offers lubricants to pinpoint nearly every transmission application MTL, MT-85 and MT-90 are not for use in differentials with hypoid gears Details: Sold as 1 Quart Excellent gear and synchro protection, balanced slipperiness for easier shifting in cold climates Excellent for high- and low-mile transmissions Compatible with petroleums and other synthetics Designed for transmissions and trans axles - helps to slow synchros for easier shifting across a broad temperature range Popular in Ferrari, Porsche and Subaru trans axles Muscle Car applications like Ford Top Loader, Muncie transmissions, Borg-Warner T-10 and Super T-10 Contains extreme pressure additives like our 75W90 GL-5 oil, but lacks friction modifiers to balance slipperiness Improved copper corrosion protection to prolong synchro life Helps with lock-up on weak limited-slip differentials-compatible with Red Line Limited Slip Friction Modifier for tuning slippage Also used with clutch-type LSDs in racing for maximum lock up Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E and SAE J2360 RED LINE 75W90NS HIGH-PERFORMANCE GEAR OIL is a fully-synthetic formula with ester base stocks, designed for use in manual transmissions and trans axles that require GL-5 lubricants. This non-slip formula is formulated for shear stability, less gear noise and consistent viscosity. Extreme pressure (EP) additives allow for use with hypoid gears, but the lack of friction modifiers causes less slipperiness for proper synchronizer operations. Friction modifier can be added or used to customize limited-slip differential operation.

Suitable replacement for:
Porsche N052911CO Dodge/Jeep 4549636 GM 88862475 Subaru SOA635011 Agip 75W-90 SX Agip SXA 75W-90 Mobil Mobilube 75W-90 SHC Mobil Delvac 75W-90 Mobil Mobilube PTX 75W-90 Shell Spirax EP 90 Shell Trans axle Oil 75W-90 Shell Spirax S5 ATE 75W-90 API Service Class GL 5 Plus SAE Viscosity Grade (Gear Oil) 75W90 Vis at 100 degrees C, CSt 15.6 Vis at 40 degrees C, CSt 94.5 Viscosity Index 176 Pour Point, degrees C neg 45 Pour Point, degrees F neg 49 Brookfield Viscosity at neg 40 degrees C, Poise 400 at neg 40 degrees C