[Vwdiesel] Rabbit Droppings #38 (Esso AD 100)

[LBaird119 at aol.com]

  I didn't remember the part about it being used in roof coating but the rest
is how I remember it.  I recall something about it being used as a gasoline
additive for something like a more even burn or such.  The stuff in most
2 cycle oil was very close in name to the product they were using with
gas.  Just one more or less atom of one thing or another.
     Loren

>     Maybe Loren will remember the specifics better, but a few years ago,
>  there was an extended discussion of why adding 2-cycle oil to fuel seemed
to
>  improve fuel economy in our 1.6's.  (Usual caveats about my memory apply
>  from here on.)
>      There were some fairly well controlled tests, and we couldn't explain
>  why it worked.  Eventually someone ran a search on the two-cycle oil
>  standards, which aren't SAE or API sanctioned, and we discovered that an
>  additive package designed to reduce ash residue and smoke was added to the
>  oil.  Further research pinpointed the ash suppressant as the likely cause.
>  It was some sort of elastomeric polymer whose main use was in roof
coatings.
>  The consensus seemed to be that the stuff bound with fuel and allowed it to
>  break into smaller drops, which led to improved combustion efficiency and
>  hence better mileage.
>      ESSO- Standard Oil- became Exxon down here several years ago, but I
>  wouldn't be surprised if the Ashless Dispersant were the same or similar to
>  the stuff in 2-stroke.
>      Scott Kair