View Full Version : 1981 s&s Powerslot fluids

05-30-2013, 01:39 PM
What are you guys using for Engine oil, Transmission? My Last Boat was a 1951 chris Craft Riviera with a flat head. I used straight 30#. Looking for some imput. Thanks

05-30-2013, 03:16 PM
atf, dexron III
oil 15w40 Valvoline vr1 non synthetic

88 PS190
05-30-2013, 06:21 PM
I'm an ATF guy - borg warner has several lubes spec'd in the boat.

I personally tend towards 30 weight - but I always have loads of straight 30 around.