: Manual gearbox oil???

12-08-2009, 11:19 AM
Help - My question is this. I have a 1979 323i that I am replacing all of the fluids in. In my manual, it states for the manual gear box to use SAE 80 (not a hypoid oil). Any idea what that is? I know that there are hypoid gears, but I cannot find an oil that doesn't say hypoid on it. Any suggestions as to what I should run in there? Thanks