Red Line MT-90 Manual Transmission Fluid 75w90 - 1 Quart - BMW

Product Details

RED LINE MT-90 is designed to provide excellent protection and improved shiftability for manual transmissions and transaxles. MTL and MT-90 have cured the problem of hard shifting in numerous transmissions which have notoriously difficult shifting. The secret to their success is two-fold. First, they have the appropriate coefficient of friction for most manual transmission synchronizers. Many gear oils, engine oils, and ATFs are too slippery for proper synchro engagement. Secondly, the viscosity characteristics of MTL and MT-90 allow proper shifting over the entire temperature range which the transmission will experience. The synthetic base oils used have a very high viscosity index which provides relatively constant viscosity as temperature changes. MTL is a low 75W, almost a 70W, at very low temperatures and a high 80W, nearly an 85W, at elevated temperatures, providing adequate viscosity to prevent wear and deaden gear noise. MT-90 is a thicker 75W90 version of MTL. The shear stability and oxidation stability of these products are excellent, thus the physical characteristics of Red Line MTL and MT-90 will change little with use.

MT-90 is a 75W90 GL-4 and also satisfies motor oil viscosities SAE 10W/15W/40. The additive chemistry used is non-corrosive, so even though they will provide GL-4 performance, they will not corrode synchros or bushings. Because of its low corrosivity, Red Line MTL and MT-90 could also be used in transmissions requiring GL-1 or GL-3 lubricants. Seal compatibility is designed to be similar to petroleum-based lubricants. 

BENEFITS

• 75W90 GL-4 gear oil
• Eliminates notchy shifting
• Designed for manual transmissions and transaxles
• Perfect synchronizer coefficient of friction
• Enables high-speed downshifting
• Excellent shifting even when cold
• Eliminates gear whine and rattle at high temperatures
• High-performance gear protection
• Non-corrosive toward synchronizers (Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage)
• Satisfies manual transmissions and transaxles requiring motor oils, or GL-1, GL-3, or GL-4 gear oils

Cross References: BMW MTF-LT-4, 81229407305, 83222339223 

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