SubieRubyRoo
Thread starter
It’s fairly safe to say, that if your manual calls for 75w85 & 80w90 and you’re changing the fluid on a reasonable basis, that yes, you can use pretty much whichever one you & your wallet fancy.Interesting thread. So after reading two pages I'm safe to use whatever 75W90 synthetic gear oil? Manual calls for 75W85 in the rear and 80W90 in the front. Dana M210/M220 with electric lockers.
There are some differences in the choices, but it’s not likely to show up anytime soon in an OEM application. If you’ve modified the vehicle, then there are probably better choices than others. I know who my money is going to, but at least now everyone’s got the same dataset to work with.