Re: 1954 Packard rear end differential

Posted by 64avanti On 2024/7/14 20:33:31

"Old gear oil is the smelliest stuff ever. The smell with penetrate through nyrtril gloves.

I heard that the old used some kind of animal fat that turns rancid. Hence the smell."

Sulfur.

Sulfur is a high pressure additive in gear oils. I have heard the sulfur molecules described as being like blades of wet grass. Tough and slippery. If you have slipped on wet grass, you can relate :)