GL-5 gear lube, 90w works for most average temps, use thinner for extra cold, thicker for extra hot. Rear differential uses the same. Capacity is 1.7 pints, so a single quart bottle will refill. In reality fill until the lube runs out the fill hole with the truck sitting level.
_________________ '78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, rough body, bought new 12/4/78. '87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch,more to come.
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