Propshaft Posted July 16, 2021 Report Share Posted July 16, 2021 I am driving my tr7 up to Scotland to do the route 500 the diff is whining what's the best oil and additive to try and reduce the whine thanks in anticipation Quote Link to post Share on other sites
BusheyTrader Posted August 2, 2021 Report Share Posted August 2, 2021 Are you 100% sure it’s the diff / back axle? I spent months chasing a whining rumbling noise that both myself and my son swore came from the back of the car. At the next MOT, I had a comment that the nearside front wheel bearing was ever so slightly rough but not enough to warrant an advisory. I changed it the next week and the “noise from the rear” disappeared completely. I’d changed my propshaft and rubber gearbox mount previously thinking they were the culprits, they weren’t. On the plus side I now have a shortened SD1 propshaft and a modified And quieter Volvo gearbox mount. The NC500 is great, I did it 4 years ago. Quote Link to post Share on other sites
Propshaft Posted August 3, 2021 Author Report Share Posted August 3, 2021 Not 100 percent sure it's the diff but the noise dies down when you take your foot off the accelerator Quote Link to post Share on other sites
BusheyTrader Posted August 4, 2021 Report Share Posted August 4, 2021 Are the remote gearbox / gearstick housing bushes in good condition / still there? Quote Link to post Share on other sites
Propshaft Posted August 5, 2021 Author Report Share Posted August 5, 2021 No play in the gearstick all gear changes are positive with no sloppiness will have a look over the next few days at other bushes cheers Quote Link to post Share on other sites
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