Offshoreonly.com

Go Back  Offshoreonly.com > Technical > General Q & A
what octane >

what octane

Register
FAQ
Calendar
Today's Posts
Search
Vendor Directory
Notices

what octane

Thread Tools
 
Old 06-01-2009, 08:05 AM
  #1  
Registered
Platinum Member
Thread Starter
 
Ken N's Avatar
 
Join Date: Mar 2007
Location: Toms River, New Jersey
Posts: 285
Likes: 0
Received 0 Likes on 0 Posts
Arrow 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.
Ken N is offline  
Reply
Old 06-01-2009, 10:02 AM
  #2  
Registered
 
Join Date: Jul 2002
Location: Troy, Mich
Posts: 2,728
Likes: 0
Received 6 Likes on 5 Posts
Default 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
wannabe is offline  
Reply
Old 06-01-2009, 12:07 PM
  #3  
Registered
 
Join Date: Jul 2007
Location: San Diego
Posts: 988
Likes: 0
Received 2 Likes on 1 Post
Default
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.
DMOORE is offline  
Reply
Old 06-01-2009, 12:20 PM
  #4  
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha/LOTO
Posts: 19,558
Received 1,821 Likes on 907 Posts
Default
I've never even seen or heard of 86 octane????

502mpi's are designed to run 87 octane.
Griff is offline  
Reply
Old 06-01-2009, 03:03 PM
  #5  
Gold Member
Gold Member
 
Dave M's Avatar
 
Join Date: Oct 2000
Location: Hollywood, MD, USA
Posts: 5,652
Received 122 Likes on 77 Posts
Default
Originally Posted by Griff
I've never even seen or heard of 86 octane????

502mpi's are designed to run 87 octane.
What he said....
Dave M is offline  
Reply
Old 06-01-2009, 09:33 PM
  #6  
Gold Member
Gold Member
 
Rage's Avatar
 
Join Date: Sep 2005
Location: Missouri
Posts: 1,987
Likes: 0
Received 0 Likes on 0 Posts
Default
I have seen 86 octane in Denver, CO (mile high).
Last edited by Rage; 06-01-2009 at 09:37 PM.
Rage is offline  
Reply
Old 06-02-2009, 09:05 AM
  #7  
Registered
Platinum Member
Thread Starter
 
Ken N's Avatar
 
Join Date: Mar 2007
Location: Toms River, New Jersey
Posts: 285
Likes: 0
Received 0 Likes on 0 Posts
Arrow
Originally Posted by Ken N
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.
Ken N is offline  
Reply
Old 06-02-2009, 09:12 AM
  #8  
Registered
 
Join Date: Mar 2009
Location: Missouri
Posts: 73
Received 4 Likes on 3 Posts
Default
In Missouri 87 is the lowest I've seen. In Colorado 85 is all over the place.
Bigsbetter is offline  
Reply
Back to Subforum
General Q & A
View Next Unread
Audio question

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Advanced Search

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.