What makes their synthetic 75w90 lousy is I have to roll slowly for for near a mile on days the temp is below 20f till the gear lube warms up enough it doesn't put a drag on my car. Next time you leave your driveway on a day in the teens shift your auto trans into neutral and you'll feel yourself slow down same as if you had a sticky caliper.
I even checked their synthetic gear lube msds and there's nothing synthetic otherwise it wouldn't take a mile of rolling for the oil to thin
I even checked their synthetic gear lube msds and there's nothing synthetic otherwise it wouldn't take a mile of rolling for the oil to thin