Offshoreonly.com - what octane

Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - what octane (https://www.offshoreonly.com/forums/general-q/209979-what-octane.html)

Ken N

06-01-2009 08:05 AM

what octane

I have a 1999-502 MPI. What is the lowest octane fuel i can run. 86 octane is what i can get at the docks.

wannabe

06-01-2009 10:02 AM

octane

I beleve mercruiser spec's 89 octane. If it has a knock sensor it will adjust the timing back. you may want to look at some octane booster. But check the merc manual, it will list the min. octane number. 86 is pretty low, I would fill up on the trailer if possible.

Wannabe

DMOORE

06-01-2009 12:07 PM

86 octane??? I've never even heard of that before. Out here 87 is the lowest. BTW, stock merc black motors, are designed to run on 87.

Darrell.

Griff

06-01-2009 12:20 PM

I've never even seen or heard of 86 octane????

502mpi's are designed to run 87 octane.

Dave M

06-01-2009 03:03 PM

Quote:

Originally Posted by Griff (Post 2877546)

I've never even seen or heard of 86 octane????

502mpi's are designed to run 87 octane.

What he said....

Rage	06-01-2009 09:33 PM

I have seen 86 octane in Denver, CO (mile high).

Ken N

06-02-2009 09:05 AM

Quote:

Originally Posted by Ken N (Post 2877309)

I have a 1999-502 MPI. What is the lowest octane fuel i can run. 86 octane is what i can get at the docks.

I stopped at the marinea to check the octane it is 87 octane.

Bigsbetter

06-02-2009 09:12 AM

In Missouri 87 is the lowest I've seen. In Colorado 85 is all over the place.

All times are GMT -5. The time now is 11:23 PM.