I'm posting as new thread since it appears that the old one died or scrolled
off the newsgroups.
Well I have finally had an opportunity to gain a large sampling of data, via
a drive to Florida, with stops in the Carolinas and here's what I found:
I've just gone through my mileage log and calculated the MPG for various
legs of the trip.
The second two legs have the most similar driving conditions, ie., speed and
lack of stops, yet the leg without the acetone got worse fuel economy.
Here's the data:
From NY area, acetone in fuel, avg speed = 55mph
563 miles 22.078mpg
Maryland to NC, acetone in fuel, avg speed = 63 mph
274 miles 24.4 mpg
to Huntersville NC and Columbia SC - avg speed = 65mph, no acetone added
this leg of trip (just residual leftover):
441 miles 19.77 mpg
Trip to Disney World, Lake Mary, FL, Inverness, FL, avg speed = 62mph no
acetone in fuel:
283 miles 18.21 mpg
Most of this trip leg, avg speed = 81.25mph followed by 15 minute backup do
to major accident between tractor trailor trucks. Drug store acetone added,
not 100% pure (fragrance additives in ingredients)
342 miles 19.46 mpg
SC to Raleigh, NC leg, drug store acetone with fragrance, bad weather
conditions, lots of slowing down, accelerating back to speed, avg speed 74
278 miles 18.28 mpg
As you can see, a wide variety of conditions affect economy. However, the
two most comparable legs of the trip were Maryland to NC and NC to SC west
end of state. All highway driving at speeds chosen for economy.
On the legs home from FL, I chose to drive much faster, as we were getting
anxious to get to NC. We hit tropical storm Tammy on the SC/NC leg, so the
last 200 miles were driven in blinding rain, almost stop and go traffic and
a lot of lane changing and accelerating back up to 72mph, which I tried to
maintain when possible. The breaking and hard acceleration seriously
decreased economy in this case.
My conclusion? Acetone seems to work under comparable conditions, going from
19.77 mpg to 24.4 mpg under identical driving conditions. My vehicle's EPA
rating is 19mpg highway, BTW, so part of the savings is driving technique.
Not bad for a big hulking SUV.
Mark & Mary Ann Weiss
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