Results 1 to 5 of 5

Thread: Fuel question

  1. #1

    Join Date
    Mar 2007
    West Fargo, ND

    Fuel question

    When filling up the tank on a Ultra 150, what would adding octane boost to the tank of 90 or 91 pump gas do?

    Anything bad or just slightly higher octane.


  2. #2
    btldigger's Avatar
    Join Date
    Feb 2007
    lebanon tn.
    Mabe add a tenth of a point or so to the octane rating and lighten your walet If you are running stock compression then You are better off running 87oct.

  3. #3
    jonny5's Avatar
    Join Date
    Aug 2005
    Redding, CA
    Dito....if it's stock run 87 will run better. As 91 burns slower.

    Most octane boosts add about 1 full point of about a half a point. I did find a octane boost that adds 60 points....which ...

    10 points= 1 octane number.. 91 + 1 full point gets you 92.

    Which most octane boosts cost about $6 or more and for about $5 to $7 you can get a whole gallon of 98 octane or even 108...which is way better deal.

    But for a stock ski the 87 will perform the best....

  4. #4
    Is this true for a stock 15f as well?

  5. #5
    btldigger's Avatar
    Join Date
    Feb 2007
    lebanon tn.
    Yes that would apply to a 15f too. I belive they recomend 87oct as well.

    The only octane boost I have seen that did much was torco accelerator race gas additive. A 32oz can added to 10gal of 91oct gives you 102oct. I keep a can in mine just in case I have to get lake gas.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. fuel question
    By andy95'slx780 in forum Polaris Open Discussion
    Replies: 6
    Last Post: 07-27-2007, 02:22 PM
  2. 15f fuel question
    By racingtrx450 in forum Kawasaki PWC Performance (4-stroke)
    Replies: 43
    Last Post: 07-18-2007, 04:35 AM
  3. 2000 slx fuel question
    By SGT BLOODYSTUMP in forum Polaris Open Discussion
    Replies: 1
    Last Post: 06-15-2007, 03:20 AM
  4. Fuel question
    By seadoo951 in forum 2-Stroke Performance
    Replies: 10
    Last Post: 05-12-2007, 08:30 PM
  5. oxygenated fuel question
    By xlint89 in forum Polaris Open Discussion
    Replies: 13
    Last Post: 01-21-2007, 09:49 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts