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garncris
05-02-2009, 05:28 PM
can you tell i'm new to boating? what kind of motor oil do I use?chrysler 90 1974-77

galamb
05-03-2009, 09:30 PM
TCW3 rated Marine 2 stroke oil (any brand) mixed 50:1 with regular unleaded gas

300hb
05-04-2009, 08:26 AM
Mercury Quicksilver Plus comes highly recommended because it's the only oil that contains a carbon cleaner in it. I only just switched to it and noticed quite a difference in a small 2-stroke snowmobile engine.