all this octane talk has got we wondering.......I have a 96 Force.....40 horse.......<br />what is the correct octane?......I am getting mixed views from the shops around these parts....same thing on the plugs......3 of the local dealers say NGK.....1 says Champion.......owners-manual says Champion.......but I have heard the factory "up-dated" that to NGK?<br /><br />comments please.....thanks..........ZZ