What do you guys use for the your differential lube. I cannot find anything without GL-4 or GL-5. I recently put some new gear lube with GL-5 and was advised to replace it. I appreciate your advice. Gary
Don't fool around with old number gear lube. Use 80-140 any brand. I use this in my 53 Hornet that I drive cross country, ocean to ocean, have 143,000 since I rebuild it and finished it in 1998. Walt.
SAE 90 API GL1 is available thru Nappa Auto part #65-201 Roger
I USE LUCAS OIL IT IS FOR A ENGINE IN THE MANUAL TRANS AND REAR END USE IT STRAIGHT ALL THE BIG TIME RACERS USE IT IT REALLY HOLDS ON THE GEAR FACE EVEN WHEN HOT IT REALLY KEEPS THING QUIET 😀
Paul - so you use the Lucas motor oil in the differential. What weight do you use. I looked at their gear oil and it hey do not state it is non-corrosive to yellow metals. I presume none of the motor oils have the corrosive additives. Gary
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