Fuel Stabilizers / Fuel Treatments - Which one and why?

Discussion in 'General Maintenance/Repair Questions' started by Little Ducky, Feb 7, 2018.

  1. Little Ducky

    Little Ducky Active Member

    692
    Jun 5, 2017
    Chattanooga TN/Dickson TN
    1998 SeaRay 290 Sundancer
    Twin EFI 5.0L w/Alpha 1 drives
    There are so many Fuel Stabilizers and Treatments on the market all claiming one thing or another. Which one do you use, which one do you avoid? ...... and why.

    I've been using Sta-Bil Marine because it's conveniently carried at the fuel dock.
     
  2. superwa

    superwa Member

    43
    Jul 27, 2013
    Rhode Island
    2001 Sea Ray Sundancer 380
    Mercruiser horizon 8.1S
    I use Seafoam quite often
     
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  3. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    In 2013, we bought our ‘06 260DA. I started out using Sea Foam and if used as recommended, it was way expensive. Soon thereafter, Startron came highly recommended. I used it as recommended for the next 4 years with never an issue with fuel. I burned the cheapest 87 octane I could find at the corner station with never an issue.

    Bennett
     
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  4. B BARKER

    B BARKER Member

    85
    Apr 20, 2014
    TENNESSEE RIVER- CLIFTON,TN
    1974 CENTURY ARABIAN 454 CRUSADER MARINE V-DRIVE.. ALSO 1987 SEA RAY 390 EXPRESS CRUISER..
    454 MERCRUISER 340 INBOARDS
    I have 153 Gallons on each side I have always put 32oz in each tank and fill em up with non-eth gas. Stabil Marine is what I use. I have done the same in my century runabout for 28 years and never had a problem with either one....8oz in this one......
     
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  5. KevinC

    KevinC Active Member

    815
    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    +1 on the Startron I use it on every fill-up. It's readily available at Walmart and a small bottle is under $10 and will treat and stabilize 128 gallons. I still like seafoam in high doses when cleaning small engines like lawn mowers.

    -Kevin
     
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  6. CNYBoater

    CNYBoater Member

    53
    Aug 14, 2017
    1994 200 Overnighter, Single Axle Easy Load'r Galvanized Trailer, 2009 Chevy Trailblazer
    Single 1994 Mercury Black Max V135 O/B
    I used Sta-bil at end of season for wintering the boat. In spring I put in Startron for the recommissioning, and at fueling I put in SeaForm. I guess I don't have a favorite all around, but I do like those three for those specific instances. I also use Non-ethanol fuel, mostly 91 Octane as that is the most common in my area. Occasionally I'll stop at a Fastrak station which carries the non-ethanol fuel in 87 Octane but its not that much cheaper than 91.
     
  7. sbw1

    sbw1 Well-Known Member

    Oct 10, 2006
    West Michigan
    This is listed in my signature
    This is listed in my signature
    What you use depends on where you boat. West Michigan's marinas sell non ethanol gas and many of them treat their fuel as well. So there no need to add anything during the boating season. Even if you choose to purchase gas at a gas station and purchase non alcohol gas, there is no need for an additive if you burn it during the summer. Even during storage with non e10 gas you can probably be ok without an additive, although we put Stabil in our boat during the lay up period. It is a good product. Where you store is important too. Inside heated storage provides a more uniform temperature which means little or no condensation issues.
    I store a tractor in a unheated pole barn during the winter with non e10 fuel in it and have no problems with it in the spring time. However, I'm not suggesting that is a good practice. However, it does suggest that using a good source of fresh fuel goes a long ways toward preventing problems when you regularly use your equipment.
     
    Last edited: Feb 8, 2018
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  8. northern

    northern Well-Known Member

    Jan 17, 2007
    West coast Vancouver to Alaska
    380 Aft Cabin 1989 GPS and Charts by Nobeltec
    Twin 454 strait shaft
    We use nothing. Boat is left full in fall and starts and runs in the spring without problem. We make sure we use non E10 fuel gas.
     
  9. sbw1

    sbw1 Well-Known Member

    Oct 10, 2006
    West Michigan
    This is listed in my signature
    This is listed in my signature
    I have had just one fuel issue in some 40 plus years of boating in Michigan. It happened when work got crazy and I did not boat enough to go through a tank of fuel for one summer and discovered crud in the fuel filters the following summer. The boat ran ok on the old fuel but the filters worked overtime. I changed them out twice and then used the normal amount of gas during the summer. All was well at the end of the season. This was prior to e10 which we have never used in a boat. Had this been a fuel tank full of e10 it would have been another matter altogether.
     
  10. KevinC

    KevinC Active Member

    815
    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    Merc does not recommend storage with a full tank of gas if there is ethanol in use. If I remember correctly they recommend 1/4 tank with extra stabilizer.

    -Kevin
     

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