Jump to content

Welcome to TheMalibuCrew!

As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. It's free and it's easy, so don't hesitate to join the TheMalibuCrew Family today!

Sign in to follow this  
lake boy

want to add fuel octane attitive

Recommended Posts

lake boy

I put in low octane fuel into my Monsoon 330. My boat is sputtering every once in a while when starting out and only has a top speed of 43mph. It should have top speed of 48mph. Any ideas if I can add octane boost to my fuel. I was told that many of those are alcohol based, and have alcohol which actually takes the moister out of the air and liquifies it, adding water to the fuel. we all know , thats a no no.

Share this post


Link to post
BoBeLiTe

SeaFoam is pretty good stuff. I've used it hundreds of times with different motors and in my truck. That just my recommendation though!

http://www.seafoamsales.com/

Share this post


Link to post
srintx

FWIW, per the owner's manual..."the only additive that is recommended by Indmar for use in your engine is Sta-Bil brand fuel stabilizer".

LS3 and LSA Engines - 91 Octane

All other Indmar Engines - 89 Octane

edit - to add octane

Edited by srintx

Share this post


Link to post
eyepeeler

FWIW, per the owner's manual..."the only additive that is recommended by Indmar for use in your engine is Sta-Bil brand fuel stabilizer.

You could be masking a bigger problem?

:plus1: Just put some 91 in ASAP and no corn gas.

Share this post


Link to post
SeanQ

Pretty much all fuel "dryers" are isopropyl alcohol. They don't absorb air moisture, they make the water already in gas more soluble so it doesn't separate and cause bigger problems. And it sounds more like you have a different problem than low octane if the boat is sputtering and not going as fast as it used to. There's more power potential in lower octane, so running higher than the 89 required in your boat will only make it more inefficient and hence slower. Could just be some bad gas, could be needing a tune up, who knows.

Share this post


Link to post
Bozboat

Drain all the gas out, siphon whatever, fill up your wife, kids, mom's, GFs, cars and start with good gas. Change the fuel filter. SeanQ has a good point, doesn't sound like octane is your problem.

Share this post


Link to post
Nitrousbird

Likely not an octane problem at all. Sounds like you have other issues you need to look into.

And besides the People's Republic of Kalifornia, where else in the US or Canada sells 91? Lowest I've ever seen anywhere for premium is 92. Mine calls for 93, which most stations sell.

Share this post


Link to post
shawndoggy

Likely not an octane problem at all. Sounds like you have other issues you need to look into.

And besides the People's Republic of Kalifornia, where else in the US or Canada sells 91? Lowest I've ever seen anywhere for premium is 92. Mine calls for 93, which most stations sell.

Nevada.

Utah actually sells 85 as regular.

Share this post


Link to post
Nitrousbird

Nevada.

Utah actually sells 85 as regular.

I filled up a couple times in Nevada when I rented an Elise in Vegas - it was all 93 that I can recall.

We used to be able to get 86 octane, but that was only at Sunoco and that went away a good 10+ years ago. Sunoco also carried 94, but sadly that went away a couple years ago as well. :(

Share this post


Link to post
Bozboat

N Bird, run by your local airport and fill up

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...