Anyone used the Redline MTL gearbox oil on the Up? I used this stuff on my BMW and it made a night & day difference on the gear selection warm and cold.
What is the correct gearbox oil spec? 75w-80 GL-4?
I haven't in the UP but I agree with you. I've used it in a few cars, some with known weak gearboxes. Ax you say the difference is amazing. Not all oils are born equal. Even when they have the same spec. and viscosity!
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