Mybihun Posted May 13 Share Posted May 13 About to perform my 1st lube change on my transmission and rear axle was going to use Stay lube gear oil SAE 140 muilti-purpose Hypoid GL-4 on both any thoughts ?Good/Bad ? Link to comment Share on other sites More sharing options...
Matt Harwood Posted May 13 Share Posted May 13 Exactly the right choice. Many of us here use exactly the same oil, myself included. 1 1 Link to comment Share on other sites More sharing options...
Daves1940Buick56S Posted May 14 Share Posted May 14 Yup, same on my 1940. On my 1938, samecalso but am about to change to Millers 140 GL-1 on the trans. 1 Link to comment Share on other sites More sharing options...
EmTee Posted May 14 Share Posted May 14 13 hours ago, Mybihun said: Stay lube gear oil SAE 140 muilti-purpose Hypoid GL-4 I used the 90W version in the rear axle of my '38. 1 Link to comment Share on other sites More sharing options...
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