I have a 2022 Mustang GT and the performance pack comes with a Torsen rear LSD. I am gonna be draining out the factory fluid at about 12K miles and swap to Amsoil SevereGear which is raved about. OEM fill is a 75W85 but many think that’s mainly for fuel efficiency and is “good enough”. I know for engine oils and transmission oil thicker isn’t necessarily always better and you should stay somewhat near OEM spec unless highway modified as modern engines and transmissions have extremely complex oil passageways. Do Torsen diffs have any downside to run a thicker oil such as 75W110 besides a small decrease in fuel economy? They seem to be just pumpkins that oil sits in, or do they require thin oil for certain lubrication channels like powertrains?
I was thinking of jumping to 75W110 as it should be more protective at high temps in the summer when driven hard but the car is also driven in the freezing winter and don’t want something too thick to affect anything in the cold temps. Is 110 vs 85 a gigantic jump in viscosity?
Any input helps thank you
I was thinking of jumping to 75W110 as it should be more protective at high temps in the summer when driven hard but the car is also driven in the freezing winter and don’t want something too thick to affect anything in the cold temps. Is 110 vs 85 a gigantic jump in viscosity?
Any input helps thank you