due to re fill my 7inch 2wd diff soon thats in use on my kitcar , so just checking whats best ,done a bit of searching on here and so far have come up with...
I did loads of searching when i changed mine in my 7.5" and the oil recommended by what i would call those with experience in this area said Mobil SHC 75W90 Competition Gear Oil
http://www.ebay.co.uk/itm/Mobil-SHC-...d=438881242548