I just got my package of RedLine synthetic gear oil. It says it`s 75W-90 and GL-5, which matches the requirement in the owner`s manual. However, it says on the back of the bottle...
"This product is not designed for use in most manual transmissions, since the extreme slipperiness may cause gear clash."
What`s the deal? Should I send it back?
Here`s what else it says on the bottle:
SAE 75W90 API GL-5 Hypoid Gear Oil
Highest performance in limited-slip and conventional differentials
Provides greatest gear protection available
Reduces differential and gearbox temperatures
Improves drivetrain efficiency up to 2-5%
Contains additive for limited-slip differentials
Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E, and SAE J2360
Compatible with petroleums and synthetics
Suitable for racing and street use
Excellent for high- & low-mileage differentials
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