Fuel Question

[Mckillop]

I am wondering if there is a need to run premium fuel in a stock 502mpi, or if I am just waisting my money by not using 87? I always have run premium in my boats, but is it worth it?

[Tidbart]

I am wondering if there is a need to run premium fuel in a stock 502mpi, or if I am just waisting my money by not using 87? I always have run premium in my boats, but is it worth it?

Absolutely no reason to run high test. Engine was built to run on 87. Save the dough.

[Mckillop]

Thanks, thats what I was betting on.

[RedDog]

Absolutely no reason to run high test. Engine was built to run on 87. Save the dough.

ditto

[Donzi Vol]

How about an older 351 Ford?

[brwn234]

I used to do the same thing. Started using regular and didn't experience any performance difference. I will however fill up with premium before I store for the winter and top off with premium the first tank or so after winter in attempt to counter act the old fuel and lost octane.

[pipnit]

Higher octane can and will often result in lousy performance if the compression isn't high enough and you can't get it to burn off all the way.