Originally Posted by CooperMan
Originally Posted by GrantAnderson
Hi guys,thanks for all the input.This is where I am at the moment.I have had it confirmed that my 4/4 sport was converted to competition spec by Revolutions up in Perth who converted it to go racing.It has throttle bodies,LSD,roll bar,AVO,s,panhard rod,etc,etc.After listening to all your comments and talking to Revolutions my next course of action is to replace the medium priced diff oil I purchased(with friction modifier)for some very expensive(£215 for 2.5 litres)diff oil+friction modifier,as advised in gomog.I will give this a go and report back to you with the result.Revolutions have said that if this does not cure the "ringing howl"I can take it back to them for investigation.

Grant, that oil price is ridiculous

Try talking to the chaps at Millers oils, they have a good tech dept, personally I use this in LS diffs, https://www.millersoils.co.uk/products/crx-ls-75w140-nt-2/ the Nanotech stuff has some benefits that may help your situation

I agree with Jon about that ridiculous price. The best oil in the world will not hide the wailing from a badly adjusted or worn crown wheel and pinion, IF that is the issue.

Having said that trying a premium oil such as Redline full synthetic 75W/90 LSD oil may be a relatively inexpensive fix if the problem is elswhere. Click image for source.

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It cured the clicking I got when manoevering on full lock, suggesting the friction modifier works better than that in the factory supplied oil (assuming it included any). Note that I found my BTR axle required more than the handbook suggested (1.6 litres) so had to order a second bottle.


Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
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