I've a ZX with a noisy gearbox due to the oil level being run low in the past (not by me!)
When the weather is very cold it runs silently with a smooth gear change, when the weather warms up the noise returns. The noise is present in all gears, and is a constant low pitched rumble/whine with a growl as the clutch takes up drive.
The recommended oil is 75/80 which Halfrauds describe as Diff oil. Will changing to a thicker oil give me an improvement (without ruining the smooth gear change) until we change the car later this year? If so, what grade oil could I go to?
I also asked the panel their views on Molyslip in the past, and got no comments. Anyone got one now? (on Molyslip or similar that is!)
I'd stopped worrying about it until after the MOT, but she passed it without comment yesterday, and I feel I ought to at least attempt a cheap fix before sourcing a cheap box/waiting for death!
Thanks.