guys, do gearbox oil affect performance drastically??
what would happen if i use mineral oil in my gearbox?? harder shifts?? easier shifts?? less crunching?? etc
i just changed the gbox oil today and noticed that the mech used Castrol's mineral gearbox oil for me. I asked him why. he said mineral oil is good enough for gearboxes, and its even used in his race cars!!
also, what gbox oil u guys are using??