Why is it that my owners manual says to use 75W140 rear gear lube on my 2012 2wd Express, but if it was 4wd or 2500 or 3500 to use 75W90 gear lube? Doesn't make sense to me. Any thoughts here?
2014 Express 3.6/8 speed/3.55 gears...Work Truck
2012 Equinox 2.4...Wife's Ride
"Life's hard, it's harder if your stupid."
How would you know?
thats because with 4wd model they expect the truck to be towing thats why the use the different gear oil. you can you use the 75/140 if you are goin to be towing with. but make sure that you use a full syn. gear oil and get some mopar limited slip fuild dont use the stuff that you can get at your local parts store.