Re: Gear Oil

Posted by DavidPackard On 2022/6/4 12:02:07

Will;

GL-1 is used for the transmission, and overdrive if so equipped.
GL-5 is used in the differential.

Dp

Edit: In addition to JWL’s comment, GL-5 oil has anti-wear compounds containing sulfur and phosphorous compounds that will degrade brass, bronze and copper. Using GL-5 in a transmission that contains any such ‘yellow’ metals would be ill-advised.