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Fuel adatives?

6/22/20 @ 12:14 PM
User since 3/21/14

Do any of you use any fuel additives on a regular basis? and if you do what kind?  My boat sits at a pier all summer and can't help but think all the hot days and cool nights has to be creating condensation in the tank.  Although i'd assume all engine makes would be interested. In my case i'm running a Evinrude E-tec

7/9/20 @ 3:26 PM
ol sarge
ol sarge
User since 3/8/04

I add Sea Foam to everything and have never had an issue. All of my engines start up one the first or second crank in the spring and run well. I do by the Ethanol free 93 octane for my four stroke engines but still add the Sea Foam. For my 2 stroke, I buy the gas in a can and have never had any issues with it. Run it in both my chain saw and weed eaters. I swear by Sea Foam. I even dump a can in my truck a couple of times a year.   

7/9/20 @ 8:20 AM
MEMBER since 6/22/01

I always buy premium gas (no ethanol) for all of my motors.  Only one I don't is my car. For my gas trimmer I don't even buy gas, I buy that gas in a can - higher octane, pre-mixed, and doesn't break down for like 3 or 4 years, or so they claim.  In my outboard, unless I'm using it every day like I did on vacation I always put about 3 ounces of sea foam in the tank before I fill it up.  I never know when the next time I'll get out fishing.  And if I still have gas left at the end of the season I dump it into a portable tank and use it in my snowblower in the winter.  One year I didn't use up all of the fuel in my tank in the snowblower and I let it sit.  Next fall I couldn't get it started until I dumped a bunch of sea foam in there and filled the tank with fresh gas and waited a few days.  It slowly got started and after running about 2 or 3 minutes it shot out a huge fireball out of the exhaust then it ran fine after that.  The fuel mustve broken down in the carberator bowl.  So now I make sure that I run all of my motors (again besides my vehicle) completely out of fuel before I put them away.

7/8/20 @ 4:28 PM
Brent Hess
MEMBER since 12/18/07


As touched on earlier in this thread, not all of us have access to ethanol free gas, and either have to drive to the next county, or add some type of fuel treatment. 

Due to EPA Regs., you cannot purchase ethanol free gas in Milwaukee, Waukesha, Ozaukee, Washington, Racine or Kenosha Counties.  

I’ve learned that seafoam in every tank keeps everything running nicely for me.

If I had a choice, I would definitely burn fuel without ethanol...

Edit: Similar to Star Tron, Sea Foam prevents moisture as well - along with a stabilizer and a fuel system cleaner. 

The Woodlands Resort
(262) 661-3968
7/8/20 @ 3:29 PM
The Rod Father
User since 8/17/17

Don't run ethanol. If you are trying to pinch pennies you should think about selling your boat! Ethanol only causes problems in engines that are not run on a regular basis. You shouldn't have to worry about gummies in your gas so run 91 octane premium non ethanol and I'll put money on problems going away. For storage purposes the Startron enzyme treatment is the way to go. Eliminates water and keeps the system clean. Previous post from Vegas492 was spot on!

7/8/20 @ 7:18 AM
BâssÂddîçt ©¸
BâssÂddîçt ©¸
User since

The thing with star tron

Does not do enough to prevent carbon buildup

That's why they make a separate product clean up carbon build-up

Seafoam Marine pro covers that also

7/7/20 @ 10:28 PM
262 Fishing
262 Fishing
User since 8/10/18

I went to da Fleet Farm last week... No Stabil but they had Star Tron. Bought a bottle just in case.

Went to Anchor's A'Weigh in Waukesha to get a few things and asked about it. The guy behind the counter was adamant that Star Tron was world's better than Stabil. I don't know about that, but at least it was an endorsement.  Dumped the bottle in my tank and away I went.  

I've seen a few pros that have YouTube channels that use Star Tron. If it's good enough for the pros (even as a paid endorsement), it's good enough for me. I wouldn't be surprised if they're about equal.

7/7/20 @ 8:10 PM
Brent Hess
MEMBER since 12/18/07

Not familiar with Star tron...

There are lots of good products on the market.

You want a stabilizer (to prevent separation), and a cleaner to remove the gum that ethanol leaves behind.

Sea foam checks both boxes, not sure about Star tron...  may be just as good???

The Woodlands Resort
(262) 661-3968
7/7/20 @ 1:11 PM
User since 1/4/09

Any opinions on Star Tron marine ?

I used Seafoam marine for years, but a friend talked me into using Star Tron. Now, I can't remember his reasons...


7/7/20 @ 7:26 AM
User since 8/1/18

I don't remember when Sea Foam came out, but i'm 68 now and remember my dad always used to call it "mechanic in a can".  

7/6/20 @ 11:54 PM
User since 9/14/06

Seafoam and 89 octane in every tank

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