According to the people at DA they say that they can tell of an engine has been run on Aviation gas because the piston and other parts show signs of corosion and the sparkplug looks like the engine was running hot.

I am having a hard time imagining this as this gas when used in aircraft engines surley does not cause this to happen in those engines and their internal parts are aluminum too as far as the pistons and cylinders.

keith at BME says aviation gas causes his engines to run hotter but the caloric value of aviation gas is about hte same as other gasolines, wonder if you know anyone who has run into problems running aviation gas?

flierbk