Home › Forum › Ask A Member › 1980 Evinrude 85 hp trim and tilt › Re: 1980 Evinrude 85 hp trim and tilt
When I worked at Hynautic (marine hydraulic steering systems) we used AW-32 to test every helm after assembly because it was easier on worker’s hands. But when the installer put it together in the boat he was supposed to use aircraft hydraulic fluid, with Dexron II as an acceptable substitute if aircraft fluid not available. So I guess that infers that all are chemically compatible. But not all the "same". Think about an airplane–one minute it may be sitting running on the ground in 120 degree heat, and 10 minuets later be in sub freezing temperatures at thousands of feet. Put in boat-speak, that means the #32 could cause stiff steering in cold weather. Power trim systems?? I dunno, probably be ok, but I’m not an engineer.