Re: Proper gear lube for Muncie SM465 with brass
I've owned multiple older stick shifts I'm sure had GL5 in them - even some I put GL5 in before I knew any better. I won't say they couldn't have worked better, but they were always satisfactory. Amsoil, Sta-Lube, and others make GL4 oils - my local Napa keeps the Sta-Lube and Amsoil is really good stuff.
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Alex V.
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1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs.
1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue.
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