I finally remembered to squirt 1 oz of Aero 1 into my fresh jug of fuel today, after carrying the bottle around for a year or more. Pete Peterson said it's good stuff, and that he had to open the NV a little when using it. Increased viscosity or reduced burnables, I guess. Pete Ferguson was watching as I injected the stuff into the top of my fueling rig, and noticed that it sank straight to the bottom. I shook the jug to mix it up, then hooked the fueling hose onto the overflow fitting, and pumped awhile, to help mix it better. See the picture to see what I mean.
So, did the engine run differently? Well...maybe. One thing I always do is to pinch off the muffler pressure hose to speed up the engine warm-up, before I try to set the NV for launch rpm. It did seem to increase the peak rpm slightly, during this procedure, seeing 10,200+ instead of 10,100 or less. The engine ran fine, but it always does. Magnum XLS .36. In flight, it ran great, maybe with a little more power. What amazed me, was that my rounds were rounder, squares were squarer, and the pullout from the Hourglass lower and flatter than ever before....
Steve
Edit: F'got the derned picture...