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Seafoam...how often?

Discussion in 'Maintenance & Upkeep' started by tlavergne, Feb 3, 2011.

  1. tlavergne

    tlavergne New Member

    Been checking out the old threads about Seafoam and still have a few questions. I have a 1999 Suburban with a 454 engine and 120,000 miles. I have never used the stuff but want to start. Do most folks use it in the crankcase at every oil change, once a year, or other? As to using it as a fuel additive...same question...how often? Do you use it with a full tank, half a tank, etc?
    Thanks.
    Tom
  2. silveradotrailblazer

    silveradotrailblazer New Member ROTM Winner 1000 Posts

    I use it to clean the throttlebody, the spray can and put a can in the fuel tank per the cans instruction. Once a year should be fine. Go to the website and they have several videos to watch.
  3. 00Silverado5.3

    00Silverado5.3 New Member

    I did it at the 100k mark
  4. ntbush83

    ntbush83 New Member ROTM Winner 1000 Posts

    Same here I did it at the 100,000 mark but I will continue to do it every year!
  5. tlavergne

    tlavergne New Member

    When this stuff is added to the gas tank is it a good idea to change the fuel filter after 100 miles or so of driving?
  6. silveradotrailblazer

    silveradotrailblazer New Member ROTM Winner 1000 Posts

    If you add to the gas tank do it just before a oil change because some of the carbon and other dirt will end up in the oil, also I would run a full tankful and then change the fuel filter.
  7. tlavergne

    tlavergne New Member

    Thanks. Kind of what I thought.
  8. Big_Ben

    Big_Ben New Member

    I do seafoam in gas tank and vacuum line once a year. In Oil 2-3 oil changes in a row, then not again for the next 4 or 5. Just my method, others have their own.
  9. murdog94

    murdog94 New Member 1000 Posts

    I do the intake yearly in the spring since the motor up here idles more in the winter. I do the oil once every 4-5 oil changes.. and once in the tank in the spring as well.

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