At 02:59 PM 1/6/2006, you wrote: >My Kr has a Great Plains 1915 cc VW engine with an Ellison throttle >body injector. Great Plains recommends that I use car gas to >prevent valve problems. Ellison states that the seals in their >units are designed for 100LL only, and that any fuel with alcohol in >it will ruin the unit and void the warranty (not to mention create >engine problems). >Jim Vance +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The key word here appears to be "alcohol". Use auto fuel without the alcohol. I'm down to one supplier in my area that sells auto fuel without alcohol so you can guess where I spend all my flying money. I'd recommend adding the recommended 4 oz. of Marvel Mystery Oil to each 10 gallon of fuel also. I ran auto fuel in the Tripacer for 500+ hours and the KR now for 190 hours with this combination and haven't had a single problem with either one to this point. These were / are both high time engines with 2000 and 2000+ hours on each. Alcohol, besides damaging some of the components in a fuel system that are not compatible, has less energy per gallon. If you were burning straight alcohol you would have to burn more gallons per hour to get the same performance from your aircraft. Auto fuel with smaller amounts added would have to effect your mileage to some extent. You can't fool Mother Nature. Larry Flesner
