I just bought an older evinrude -model # 335528-a 33 hp ski-twinWhat is the appropriate oil fuel ratio. My marina suggested 24:1 but my buddy says it will run better with a leaner 35 or 40:1 Help
a think you should 50 to 1 i have never used any other mixture. i have a 74 i use 50 t0 1 the same for my 89 55hp . i think all those old girles drank 50 to1 .