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Gear Oil for Manual Transmissions

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

75W140NS GL-5 Gear Oil

Big protection but not slippery, for certain trans and diff applications.

MTL® 75W80 GL-4 Gear Oil

We invented the performance manual trans gear oil market with MTL.

MT-85 75W85 GL-4 Gear Oil

Our intermediate viscosity for Korea's finest and a few others, too.

MT-90 75W90 GL-4 Gear Oil

The most popular, the most viscosity, the most applications.

75W90NS GL-5 Gear Oil

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


Versatile and stable. For both automatic and manual transmissions.


As ATF requirements lean toward lighter viscosity, this one has ultimate stability. For both automatic and manual transmissions.