Hello all,<br /><br />Last week I want to the Mercury dealer near my place in order to buy an impeller for my Force motor and since I was there I bought a liter (pint) of oil, well it's aint cheap that stuff from Merc. 9.95$ CDA for mineral oil, not synth., but I had to buy some and did have the time to run to Wallmart. Since I just got the boat few weeks ago the 2 first time I mixed oil in it, I used Shell Nautilus which I am buying at Wallmart for 6.50$ /pint, does anyone knows something about Shell TCW3 oil, is it good stuff or should I run away from it ? <br /><br />Thanks <br /><br />Mario 