Best weight or GL ratings for engine, transfer cases, transmission and differentials.
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what about the GL rating. Are there yellow gears that need to be considered?I did 85-140 gear oil in the cases. When its like 30 below zero, moving the shifter is like pushing a spoon threw peanut butter. Once the rig moves 5' or so, it shear thins enough to work like normal. Engine oil, 20-50 3 seasons and 10-40 winter. I have and use a block heater.