AvGas ok for Fuel injected PWC engines?

[ananoman]

I had assumed you had an older Regal GS from the late '80's, do you have one of the newer supercharged ones?

 

[SierraPilot123]

I gave it a shot this weekend. 50/50 91 and AvGas Mix. The engine ran great. I saw a 200 RPM increase and definite increase on the hole shot. Most importantly no boost reduction on long WOT runs. Only time will tell but intial impressions are good.

You are just going to have to decide whether you think it is worth it or not. Looks like the worst that could happen is some fouled plugs, which you may be able to fix by using a hotter plug. I don't really think that the dye, vapor pressure additives, and any anti-ice additives will cause any harm. The average airplane engine cost more than the car you probably drive, so I doubt that any of the additives can be that harmful. Same goes for the fuel system. The rubber bladders used in many airplanes are a lot more delicate than what you would find in most other vehicles.