Sounds like something I should try. Over the years I have had good results with Gumout and Pyroil, and have found some brands e.g. Snap to be worthless.

Ashton Crusher wrote:
>
> I've nothing against Pyroil or Gumout but Chevron Techroline is also
> excellent and won't foul plugs but will clean them up along with
> cleaning up the valves, injectors, and combustion chamber in general.
> I don't know if they are still available but Chevron used to send out
> test results with before and after pictures and graphs showing grams
> of gunk removed versus various concentrations of techroline in the
> gas.

--
Mike Walsh
West Palm Beach, Florida, U.S.A.