Re: Alcohol in gasoline (spin-off from pulsing engine)

[62to65mopar <62to65mopar@xxxxxxxxxxx>]

Below is an excerpt from an editorial in the 8-2100 Rock Auto
newsletter about E-15:

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...So E15 probably will not dissolve the fuel systems in late model
cars and maybe their engine computers, knock sensors and other parts
can recognize and correctly respond to higher octane E15, but what
about my 1979 Chrysler? There the news is not good because there
really is no clear news. I was excited when I saw a US government
sponsored report on the impact of E15 on “legacy” vehicles. That is
until I discovered that legacy only meant 10 years old! The study only
indicated they were reasonably confident that E15 would not have a
negative impact on 2001 and newer, legacy vehicles.

There have been studies of off road engines found in lawn mowers,
marine engines, snowmobiles, etc. that could relate to old cars. Air-
cooled weed whackers and old cars with carburetors do not have oxygen
sensors that provide the engine with feedback on the correctness of
the fuel mixture. There are concerns that ethanol could create too
lean a mixture and too much heat. Ethanol might dissolve rubber
components or the composite body of my Chrysler’s Carter four-barrel
carburetor. There are just too many different old engines and engines
not designed for ethanol for anyone to make any 100% guarantees about
the impact of E15, E20 or higher ethanol concentrations.

Increasing ethanol concentrations in five percent increments appears
to be nothing but a “let’s see what happens” gamble for truly old
cars. With all the old cars and other engines not designed for ethanol
out there, hopefully 100% gasoline or at least E10 will remain
available. Now I better understand why E15 is such a political,
environmental, technical and legal hot potato. -- Tom Taylor
===

Thanks,
Gary H.

> On Fri, Aug 19, 2011 at 9:57 AM, Ray Henry <62d...@xxxxxxxxxxxx> wrote: ...
> > Me, I'm absolutely happy with E10. Love it, think it's the best thing ever.
> > E15? I'm leery. Not just the splash blending problem, but the other impacts.
> > Increased cost in fuel. Impact on other markets (real or anticipated by
> > stock brokers).

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