Widget New Member Mar 24, 2006 #21 Ahh - just looked at your truck which has an LT77 gearbox yes - shouldn't that run on ATF? Mine is an LT85 which has 20W50 specified for it - but when it has bedded-in I'll be using synthetic gear oil.
Ahh - just looked at your truck which has an LT77 gearbox yes - shouldn't that run on ATF? Mine is an LT85 which has 20W50 specified for it - but when it has bedded-in I'll be using synthetic gear oil.
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