Vapor pressure (pressure at which fuel prefers to be gas instead of liquid) will be essentially unchanged by the addition of 2-stroke oil.
However. With our high pressure, high flow systems the chance of vapor lock is basically zero. Proper design would include 1) pumps that are low and close to the tank 2) returning the fuel to a main tank or a large header tank. That's it!... With that set-up we can use winter blend auto fuel from the highest airports on the hottest days with prolonged ground runs and still have zero risk of vapor lock.
The typical rotary installation will have zero risk of carb ice as well.
Those two problems account for a large percentage of GA accidents and also probably many of the accidents that have "unknown" causes.
That us really cool!
On 9/12/05, Bobby J. Hughes <bhughes@qnsi.net> wrote:
Anyone have any data as to what affect mixing two stroke oil with auto fuel does to vapor pressure? Will it make auto fuel more tolerant at higher altitudes or less?
Bobby
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