1987 Evinrude 88hp

[shotgun33]

I just bought a 1987 Evinrude 88 hp. For the most part, it is running great. But the last time I had it out I ran out of gas and I had only been out for about 2 hours. For most of that time I was at half throttle. I think there may be a leak in the gas line but there are no visible signs on the outside. I was also wondering what the proper oil mix is, 40:1 or 50:1. Thanks all.

 

[lmuss53]

Re: 1987 Evinrude 88hp

50 to 1 on the mix. The commonly accepted rule of thumb says you should use about 1 gallon for every 10 HP per hour running at or close to wide open. You don't say how much gas you used in your 2 hours of half throttle.

Although it hasn't happened to me, we have had a rash of gas thefts in my neighborhood lately and you might want to be sure you used all your gas, not one of the neighbor kids in his Civic

 

[Lion hunter]

Re: 1987 Evinrude 88hp

Mix is 50:1. Not sure if your getting proper mileage or not because I don't know how much you started with. A good estimate is 10% of the HP per hour at WOT. So your 88hp should be about 9 gal/hour at WOT. It's pretty difficult to measure accurately unless you keep it at a constant throttle all the time. But 9 gal/hr should be about the max usage.

 

[shotgun33]

Re: 1987 Evinrude 88hp

whoops! I went through about 4 gal, going about half throttle.

 

[Lion hunter]

Re: 1987 Evinrude 88hp

2 gal/hr is pretty dang good