F4R'd ITB'd '92 cup racer
right, had my gearbox refurbed middle of last year after it developed a hellish whine, did 2 trackdays afterwards while using 75-80 oil and a faint whine has developed again
been told by the guys that refurbed it that 75-80 is no good and i should change to 75-90, he reckons it is prob the 5th gear synchro (common fault)
question is, will changing the oil make such a difference that it will 'cure' the whine?
reason i ask is i need to decide if i should have the box refurbed again before i do more trackdays, or just carry on with the new oil?
part of me is thinking 'stop being a hypochondriac and just use it til it breaks or gets alot louder'
been told by the guys that refurbed it that 75-80 is no good and i should change to 75-90, he reckons it is prob the 5th gear synchro (common fault)
question is, will changing the oil make such a difference that it will 'cure' the whine?
reason i ask is i need to decide if i should have the box refurbed again before i do more trackdays, or just carry on with the new oil?
part of me is thinking 'stop being a hypochondriac and just use it til it breaks or gets alot louder'