Seafoam and ATV’s

  • tmyboy2001
    Lakeville, MN
    Posts: 282
    June 1, 2013 at 12:07 pm #1213541

    Good morning guys,

    I have a ’95 and ’97 Polaris Sportsman, 400 and 500 respectively. What is the best amount of Seafoam to run through a full tank of gas, in your opinion?

    Thanks!

    Grouse_Dog
    The Shores of Lake Harriet
    Posts: 2043
    June 1, 2013 at 12:11 pm #1174767

    Rate Per Gallon

    Read the Can….

    Dog

    taz
    Frederic wi
    Posts: 395
    June 1, 2013 at 7:09 pm #1174858

    One ounce of seafoam per gallon of gas.
    For mixed gas it would be 2 ounce per gallon of gas

    grumpy
    Iowa, Clinton
    Posts: 489
    June 1, 2013 at 7:13 pm #1174860

    FULL CAN TREATS 20 gallons

    TheFamousGrouse
    St. Paul, MN
    Posts: 11624
    June 1, 2013 at 8:56 pm #1174880

    What problems are you experiencing that you feel you need to add Seafoam at all? What’s wrong or happening with the ATVs?

    Seafoam is a strong fuel system detergent. It can help with certain fuel system, injector, and carb issues, but only in limited circumstances.

    If you’re thinking that Seafoam “treats” or somehow “neutralizes” ethanol or prevents condensation or phase seperation, this is 100% urban legend BS. Engines are NOT tested to run on high concentrations of detergents, so constantly adding them is as likely to harm your engine as it is to help it.

    If your engines are running poorly, fix the problem. Otherwise, run on fresh fuel and don’t add untested additives unless needed.

    Grouse

    dairycat
    Posts: 169
    June 1, 2013 at 9:36 pm #1174886

    If your just treating the gas I would go by the amount recommended on the can. If you want to clean your fuel system I would put half the bottle in each atv. I have been using seafoam for quite sometime with no ill affects. Cars, small 2 stroke engines, boat, anything that burns gas i use it in.

    suzuki
    Woodbury, Mn
    Posts: 18615
    June 1, 2013 at 10:53 pm #1174902

    1 ounce per gallon. Maybe a little more if for a reason.

    tmyboy2001
    Lakeville, MN
    Posts: 282
    June 3, 2013 at 11:56 pm #1175367

    I’m having some idling and starting problems with the 400. It probably requires a tune up and some carb adjustments, but before I spend the money on that, I wanted to add a bit of system treatment to see if it improves.

    I also wanted to know if there were any other faithful Polaris owners who knew the engines better than I did, and had any tips.

    oldbear
    State Center, Iowa
    Posts: 326
    June 12, 2013 at 1:49 am #1177242

    How did it come out. I think its good stuff.

    tmyboy2001
    Lakeville, MN
    Posts: 282
    June 16, 2013 at 7:02 pm #1178133

    I’m noticing a better idle in the 400. She sure smoked once the Seafoam was added, as was to be expected.

    suzuki
    Woodbury, Mn
    Posts: 18615
    June 17, 2013 at 1:21 pm #1178239

    Good to hear.

    Nicky mayer
    Posts: 1
    February 3, 2022 at 12:13 am #2096170

    Not a reply to your question but I have one …how long after adding seafoam til I can try starting my quad ?

    haleysgold
    SE MN
    Posts: 1463
    February 3, 2022 at 5:11 am #2096175
    Nicky mayer wrote:

    Not a reply to your question but I have one …how long after adding seafoam til I can try starting my quad ?

    You don’t need to wait. Make sure it mixed with the gas in the tank or can. It doesn’t need to “sit” in the gas to treat it.

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