Red Line 75W140NS GL-5 gear oil

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.

• Contains extreme pressure additives like our 75W140 GL-5 oil, but lacks friction modifiers to balance slipperiness.
• Popular for historic and vintage transmissions, like Mid-1930s to early-1950s synchro-equipped gearboxes in cars and trucks.
• Helps with noisy or rough shifting in troubled A-833 Dodge/Plymouth 4-speed transmissions from 1964 to 1969.
• Option for noisy transmissions when mixed with 75W90NS or MT-90 to bring viscosity level up.
• Also used in clutch-type limited slip differentials in racing for maximum lock up-some users add Limited Slip Friction Modifier in small doses to customize slippage.
• Non corrosive formula, safe for use with all synchro materials.

Features:

• 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.
• MT-LV, MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears.
• 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.