Jump to content
  • GUESTS

    If you want access to members only forums on HSO, you will gain access only when you Sign-in or Sign-Up .

    This box will disappear once you are signed in as a member. ?

  • 0

Premium gasoline in out boards


Norco

Question

4 answers to this question

Recommended Posts

  • 0

My motor is a 91 25hp Merc, I have noticed since trying a premium gas it's harder to start so I think Im going to switch to regular. Thanks for the info

Link to comment
Share on other sites

  • 0

It is a widely held belief that higher octane equals higher performance. All octane is is a measure of resistance to detonation. The higher the octane number, the greater the detonation resistance.

I saw a poor soul a few winters ago fill his sled with 100 lowlead, avaition gasoline. He was fouling plugs left and right because his stock engine had not nearly enough compression to get the fuel to ignite properly.

Link to comment
Share on other sites

  • 0

Hi Norco,

Is it a newer outboard?

If you have your owners manual, check the recomendation by the manufacturer.

My outboard is a 2002 and 87-89 octane is recomended.

Remember, the higher the octane, the MORE firing power it takes to ignite the fuel.

Good luck and good fishing.

Link to comment
Share on other sites

  • 0

I run a newer 75 4 stroke and was told by the mechanic that if at all possible to run non-ethenol gas in it and every time I fill up with gas to throw in a can of sea-foam. I have a 32 gal. tank. He said that in the larger gas tanks, gas tends to sit around in them more before it is used and ethenol gas will start to "break down". Can't say that I have had any problems at all. My dad runs the same thing in his 6 gal tank for his 86 35hp more and that runs like a champ.

Link to comment
Share on other sites

Guest
This topic is now closed to further replies.


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.