At this moment I?m repairing Johnson 25 HP from 1970. (25R70E) and I stumbled across a little dilemma, so I?m asking for an expert advice. More precisely, in my country (Macedonia, Europe) there is only 95 and 98 unleaded gasoline available while, according to the manufacturer, i think the motor is supposed to work with 89 octane gasoline. Could the use of 95/98 octane unleade gasoline cause some problems, and of what kind?
