On 12/22/2025 2:23 PM, Kayak via KRnet wrote:
this is interesting and scary. my own goal would be to be able to run
auto fuel reliably. IF possible. but at this point since I have no
kit nor plans to build, just an academic question. "back in the day"
I had a Grumman AA1 with auto fuel STC and it worked fine, AvGas was
$1.93 and car gas was $1.35. but that was before this stupid ethanol
travesty started. :)
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And summer and winter blends and California only blends and, as Jeff
Scott found out the hard way, all the different unknown additives that
different suppliers put in their mix. There are probably a number of
auto fuel suppliers that sell a compatible product but "consistent
dependability" is hard to come by in today's market. Is doing a time
test on every 5 gallon jug of fuel worth the dollar savings? Does every
airport selling "auto fuel" do a "time test" on every batch of auto fuel
or simply the standard daily test for water / impurities? And, even
airports that sell a good mix of "auto fuel" probably sell limited
quantities in relation to their tank volume. How long has that last
delivery set in their tanks and has the quality held over time?
As always, YRMV.....................
Larry Flesner
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