What Gear oil for diffs & Gearbox's?
Dipping into the great wisdom of Mluers
I know this question has been asked before & if you can guide me to the thread that would be great.
1941 Chevy truck - what gear oil goes into the Gear box and differential?
Ive got Caltex Thuban Gear oil EP. SAE 85W - 140 API GL-5. I remember reading something on here about EP meaning Extreme Pressure. This means this oil may have additives that attack Brass??? Is that right?? Are there brass or copper components in either the gearbox or diff in the Chev truck?
Many thanks
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