Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
EBass

Octane Q?

8 posts in this topic

Just wondering what Octane people use. I have an 88 25H Merc and I've been running it with the higher octane 92/93. Is that OK, or will she burn up?

This is my first boat so I have no clue! Thanks FM Members!!

Share this post


Link to post
Share on other sites

Unless you are looking for peak (racing) performance, I think you can run with unleaded just fine.

Share this post


Link to post
Share on other sites

E-bass,

Most outboard engine manufacturers recommend an 87-89 octane fuel be run in their engines.

Higher octane requires higher compression and more firing power to ignite the fuel. It sounds like you are doing alright on it, but some folks find with higher octane gasolines they foul plugs alot easier.

I would suggest going back to a regular grade octane gasoline. It will save you money and performance should still be more then satisfactory.

Just my .02.

------------------
Good fishing,
UJ
unitedjigsticker@aol.com

Share this post


Link to post
Share on other sites

My '99 115hp runs terrible on higher octane gas. The manufacturer recommended 87 and it runs best on this fuel. I could care less if it has ethanol in it as it has never been a problem in any of the 34 cylinders I own smile.gif

Share this post


Link to post
Share on other sites

Thanks for the info fellas. I'll switch back to 87. Too bad I just filled her up with 93. Whoops smile.gif

Share this post


Link to post
Share on other sites

This questions comes up frequently, especially in regard to two stroke motors.

Octane is simply the measurement of gasolines resistance to detonation.

Higher octane does not mean that it burns hotter, or has higher performance.

Most normally aspirated engines will run fine on any fuel you can get at the pumps in the 87 to 93 octane range.

Many folks run the higher octane fuel as some stations have one pump that has un-oxygenated fuel. This pump is typically the highest octane. This fuel will have no ethanonl added that can cause seal and o-ring troubles in older engines.

I have seen snomobilers put 100 Low Lead in a factory engine, and they were fouling plugs left and right. This engine simply did not have enough compression to efficiently burn the higher octane fuel. It did no harm, it just made their sleds run excessivly rich.

Share this post


Link to post
Share on other sites

Holy Cow Batman!

I don't know how long it would take me to read the information in the link and comprehend most of it. I'd have to read it very, very slowly.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • Definitely plan on doing some pulling by hand ealry ice so I'm thinking the cabin it is then. Thanks for the tips and info on the otters and equipment it's been a very big help!
    • Yep, I've contacted 4 or 5 campgrounds in the last couple of days. One has gotten back to me, the rest have not yet.   We will be up that way over the Labor Day holiday so we can check out a few campgrounds while we are there. We actually checked out 2 or 3 while we were up there last year at that time.   I'm not too sure if we are ready to take the plunge yet or not but we are close.
    •   If you are start talking to the owners of the campgrounds now about letting you know when there may be an opening. Ours fills up during the summer but at the end of the season the owners will start hearing about those that will be moving out at the end of the year. Lot's of relatives will tell their families as soon as they hear someone is moving out. Good Luck.
    • Thanks guys. Looks like there are a few lakes to checkout.
    • I really hope the wolves aren't seriously considering this. You take LeBron James off the cavs, and Irving leads them to an 8 seed in the east, at best! This is going to be KAT's team for years to come, so if Irving is looking to be top dog, it certainly won't be here! Personally, I don't think he'll be traded. If the lakers show any sign of improvement in this upcoming season, LeBron will be leaving to go there anyway, so Irving just needs to be patient and he'll be he top guy again.
    • We're definitely checking out our options in a couple of areas we like but I'm not sure if it will happen as early as next year or not.
    • Definitely something to be said about parking it an leaving.  My fees are nothing except the bills I help pay for at the family cabin.  Would hate hooking and unhooking all the time.
    • Still have my old sno-boat. Best portable shelter out there for pulling by hand. You scored a heck of a deal! I feel mine is irreplaceable! I don't use it much, but when I do, I'm so glad I have taken care of it and still have it 16 years later. I've had 1 zipper replaced on the D-door and some patching done at Canvas Craft years ago.  I think the other zipper is on it's way out, and will definitely get that repaired when needed. 
    • If you planning on doing any hand pulling at all then do not get the lodge she is a tank and would not fit in a short box. As long as your not 300+ lbs you'll be perfectly comfortable with 2 adults in the cabin. Also a cheap alternative to Hifax are a set of old downhill skis (normally $7-15 @ goodwill) I pull mine across parking lots all the time behind the wheeler and they hold up really well. An added bonus is if you cut them off at the end of the sled then they work great for loading and unloading the shack from your pickup box by yourself because the steel sides dig into the ground a bit keeping the bottom from sliding out.
    • tip to a couple good friends   Len,
      Thank you for the stream recommendation, Len! I love the layout of this stream. Fished it from 3pm until 6:30pm.  My brother threw panther 9s and I threw 6s. We scored a brookie/brown/bow trifecta.    
  • Our Sponsors