http://www.ebay.co.uk/itm/Millers-Oils-CRX-LS-80w-90-NT-Competition-Semi-Synthetic-Gear-Oil-1L-/400552264600?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item5d42c68398 previous owner used semi synthetic LS90 MILLERS gear oil the one above on the link is LS-80/90 is this the same as the LS90 oil ? as its closest i could find recently i changed my gearbox oil on mates car & his box is soo loudon full locks its so unbelievably loud/clunks like somethings about to break but as soon as u turn either side full lock with clutch down thres no noise at all CUSCO LSD previous owner used LS90 semi synthetic gear oil, where would i get this from?? or do i use the one on the link above reli need help ASAP as i have used some cheap oil called ''Granville LS 80/90'' atmo.. my diff was fine before changing the oil cheers