10hp evinrude what oil and gas

[dsk]

i have a sport twin 10hp evinrude and wandering if i need to add any special gas additive or can i just run it on 50:1 oil

 

[Chinewalker]

Re: 10hp evinrude what oil and gas

Hi DSK,<br /> The 10hp Sportwins were built in one form or another up into the early 1960s (need model number to pinpoint) and don't make the cut for 50:1 mix. They still had several bronze babbit bearings and need some extra oil to stay in operation over the long haul. 32:1 (pint oil to 4 gallons gas) using good quality TCW-3 rated oil and good quality gasoline (89 should be good enough - 87 can be kinda junky in some areas, 90+ high test not necessary) and you'll be good to go...<br />- Scott

 

[GTCoupe]

Re: 10hp evinrude what oil and gas

You might even step that oil ratio up to 40:1, it'll still provide good protection and be a bit less likely to foul plugs.