Quote:
Originally Posted by jpws
I've used the Castrol EP90
Available here and elsewhere |
I hope you don't mind me saying, but that's only GL-4 (moderate pressure hypoid gearboxes) and I would recommend something suitable for the very high pressures exerted on the gears in the old diff back there, GL-5.
As above, the the multigrades that are around nowadays for high pressure gear oils mean a better temperature range when only single grades were around.