Red Line MT-90 75W-90 GL-4 Manual Transmission And Transaxle Lubricant MTL One Gallon For Quicker Shifts Solid Gear Protection Notchy Shifts Gone Longer Synchro Life Suitable For GL-1 GL-3 And GL-4
✔️ 75W-90 gear oil for GL-1/GL-3/GL-4, quick shifts, brass-safe
Engineers and drivers rely on a strong manual transmission lubricant to protect gears, improve shifts, and extend synchro life. This one-gallon bottle is designed for GL-1, GL-3, and GL-4 systems and is recommended for vehicles that specify older synchromesh fluids while delivering modern performance.
✅ One gallon container provides ample coverage for multiple drain intervals
✅ Improves smoother engagement and quicker shifts across cold and warm temps
✅ Safe for brass synchros; avoids reactive sulfurs common in GL-5 oils
✅ Supports GL-1, GL-3, and GL-4 specs for legacy and newer transaxles
💡 What is the general role of this gear oil in manual transmissions? - Provides lubrication and protection for gears and synchros - Improves shift quality and life of components under varied temperatures - Safe for brass synchros and compatible with legacy and modern systems - Used in transaxles that specify GL-1/GL-3/GL-4 oils