Seaworthy
FOUNDER
Massachusetts
I need some info from you folks in AK or wherever who use a lot of MOGAS. KPYM will shortly be selling certified ethanol free mogas for A/C. Octane is UNK. I have a PA-12 with O-320A with 150 hrs currently on it.
I read the Petersen STC info and the one caution that they offer is beware of RPV factor in warm weather re vapor lock. They also state that octane affects volatility. (Higher volatility may lead to increased probability for the production of carb ice) What they don't state is: the relationship between octane and volatility. Does increased octane equal higher volatility? I would assume it does, but we all know where assumptions take you.
The reason for the questions and its importance is that my engine for whatever reason is an ice machine. As soon as relative humidity approaches 80% I have to seriously worry about ice. Once it starts it comes fast and the engine doesn't just gradually start losing power. It' loses power at a startling rate----like it scares the crap out of me.
The question is: Would I be prudent to stick with 100LL or get the STC and try mogas?
Thanks much.
I read the Petersen STC info and the one caution that they offer is beware of RPV factor in warm weather re vapor lock. They also state that octane affects volatility. (Higher volatility may lead to increased probability for the production of carb ice) What they don't state is: the relationship between octane and volatility. Does increased octane equal higher volatility? I would assume it does, but we all know where assumptions take you.
The reason for the questions and its importance is that my engine for whatever reason is an ice machine. As soon as relative humidity approaches 80% I have to seriously worry about ice. Once it starts it comes fast and the engine doesn't just gradually start losing power. It' loses power at a startling rate----like it scares the crap out of me.
The question is: Would I be prudent to stick with 100LL or get the STC and try mogas?
Thanks much.