Fuel Oil Mix

[big-dave]

this is my first boat, a 1972 starcraft with a 40 hp. johnson and a 3.3 hp. mercury kicker. what is the proper fuel oil mix for both.(the mercury is fairly new
2003 or newer)

 

[lindy46]

Re: Fuel Oil Mix

What year is the johnson? It makes a difference. I don't know about Mercury.

 

[Bifflefan]

Re: Fuel Oil Mix

My '74 85 HP Johny is 50:1
thats probably the same. i would check a manual first tho just to be safe. but its 50:1

 

[Boss Hawg]

Re: Fuel Oil Mix

As said 50:1 is correct &
Welcome to the Starcraft Club

 

[big-dave]

Re: Fuel Oil Mix

thanks to all, now all i have to do is learn how to back down the launch.

 

[tx1961whaler]

Re: Fuel Oil Mix

Q - What is the fuel/oil mix for my motor?
A - The following is generally true: 1958 and prior used 20:1, 1959 thru 1963 used 24:1, 1964 and newer use 50:1. High performance usage (racing) requires a ratio of 25:1. New engine break-in (not DI) requires 25:1.