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slug · 09-18-2023, 11:21 AM

I am assuming that since all you can get now is GL-5 is OK. It supercedes GL-4 in still the 85-140 weight. This is for my 1939 trans and rear gear. Anyone care to enlighten me. Thanks.

09-18-2023, 11:21 AM	#1
slug Senior Member Join Date: Dec 2010 Location: Granville ohio Posts: 174	Sta Lube Gear Oil I am assuming that since all you can get now is GL-5 is OK. It supercedes GL-4 in still the 85-140 weight. This is for my 1939 trans and rear gear. Anyone care to enlighten me. Thanks.