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Gear Oil for Manual Transmissions

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

MTL 75W80 GL-4 Gear Oil

We invented the manual trans gear oil market with this, right, Al Gore?


Versatile and stable. For both automatic and manual transmissions.


As ATF requirements lean toward lighter viscosity, this one has ultimate stability.

75W90 NS GL-5 Gear Oil

NS means non-slip, for transaxles that need hypoid-protection and smooth shifting