Owner's manual says '87 or better', but get the feeling from most folks posting that high octane may be a bad idea. Anything specific suggestions for this make/model/year?<br /><br />Thanks, Mike
I have a 25 HP Evinrude that's missing it's ID plate, with the following info on the powerhead plug:<br /><br />25502B<br />E0004031<br /><br />It currently has NGK B6 S spark plugs installed as well (I've heard that can help narrow down the year). <br /><br />If anyone out there can assist...
