ENGINEERED - to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals and less wear CONTAINS - extreme pressure additives like our 75W90 GL-5 oil, but lacks friction modifiers to balance slipperiness DESIGNED FOR - transmissions and transaxles, helps to slow synchros for easier shifting across a broad temperature range POPULAR GEAR OIL FOR - Porsche, Dodge, Jeep, GM, and also used with clutch-type LSDs in racing for maximum lock up. Popular in Ferrari, Porsche and Subaru transaxles. WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises RED LINE SYNTHETIC GEAR OILS Designed to provide the highest degree of protection and greatest efficiency for your drivetrain. Red Line provides a complete line of drivetrain lubricants which are optimized for differential, transmission, or transaxle use over a wide range of temperatures. Red Line 75W90 NS - a GL-5 which does not contain the friction modifiers for limited-slip hypoid differentials. This makes the transmission synchronizers come to equal speeds more quickly, allowing faster shifting and much easier low-temperature shifting. Can also be used in racing limited-slip differentials where weak spring design causes too much wheel spin. RED LINE SYNTHETIC GEAR OIL BENEFIT SUMMARY: * Provides the greatest gear protection available * Reduces differential and gearbox temperatures * Increases differential and gearbox durability * Rapid lubrication even in very cold weather * Improves shifting in manual transmissions * Provides improved drivetrain efficiency * Prevents foaming even at high speeds * Low corrosiveness reduces synchronizer wear * Stable even at elevated temperatures * Highest film strength available * Can be used in limited-slip and regular differentials * Suitable for competition and street use * Compatible with petroleum and other synthetics * Compatible with seals designed for petroleum * Satisfies requirements calling for API GL-5 and GL-6 * Allows extended drains in non-warranty vehicles