Plug Reading

[Bruce Plecan]

> >  Yep , and  to that end , additive packages vary per fuel provider, add
> > to the art
> >  of reading spark plugs. Spec additive packages provide us with end
> > results of what
> >  they do to plug coloration, from what I've observed along the way. Some
> > blends
> >  tend to rapidly deposit the metallic component[ s ] on insulators,
> > tending to muddy
>
>
> Shell, IMHE, is one of the worst of the pump fuels for deposits...
> Yellowish-Green ones in just a few miles.
> Amoco and Mobil seem to have the least deposits.

I fined Doc 20 cents for putting shell in the lawnmower
Grumpy





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