Hi Guys,
What gearbox oils are being used for 5 speed gearboxes. The manual I have recommends a GL-4 rating as the GL-5 will eat syncros. ( GL-4 for the gearbox / GL-5 for the diff.)
But I was looking at Penrite oils and they recommend a GL-5 oil. Redline recommend GL-4 ( MT-90 ).
So. The question is: What are you guys using and are you having any problems.
David.