snacky Posted July 4, 2014 Share Posted July 4, 2014 probably going to run amsoil in the transmission and diffs. i use it in all the manual transmissions and rear ends on alot of other classics i have owned. it keeps hardware in good shape. i will call the company when they reopen and find out what they reccomend. probably some 80w90. thoughts anyone? Quote Link to comment Share on other sites More sharing options...
Prwa101 Posted July 4, 2014 Share Posted July 4, 2014 Exstra-S is OEM gear oil for subarus. It's better than anything else I've used before. People have said it makes a slight grind when shifting go away. Quote Link to comment Share on other sites More sharing options...
bratman2 Posted July 4, 2014 Share Posted July 4, 2014 I have had great success with Redline MT90. Makes the old transmission in my Brat shift very good compared to how it use to. 1 Quote Link to comment Share on other sites More sharing options...
briankk Posted July 4, 2014 Share Posted July 4, 2014 Recently read a topic concerning AmsOil, seems it used to be a PAO synthetic, but now has changed to a "proprietary formula", i.e., is not a PAO synthetic anymore, but rather has been degraded to less expensive formulation. FWIW... Quote Link to comment Share on other sites More sharing options...
bratman2 Posted July 5, 2014 Share Posted July 5, 2014 If it is too slick it will make grinding, scratching gears worse. Many years ago I changed mine over to Mobil 1 gear oil. It made it worse. Back then several people on this board were talking about how good MT90 worked. Mine was bad about wanting to scratch second sometimes and hard to get into first unless completely stopped. The Redline MT90 completely cured that and that has been well over a dozen years ago. So I have been using it well over a dozen years in my Brat. Quote Link to comment Share on other sites More sharing options...
snacky Posted July 6, 2014 Author Share Posted July 6, 2014 can i use extra s in the rear end too? Quote Link to comment Share on other sites More sharing options...
Prwa101 Posted July 9, 2014 Share Posted July 9, 2014 Yes you can. Prwa Quote Link to comment Share on other sites More sharing options...
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