Lee, I could go do a test, but it will only be valid for the conditions during the test. Temp, pressure, humidity, will all vary the results significantly. Since I have no way of correcting for the conditions, it wouldn't mean much.

I flew my MiG for about 6 months at my location, which is at about 2,400 feet, average temp 80 to 90. Got my timers set and got used to the thrust. I was a happy camper. Then I went to Whidbey in 2000 for their rally. Sea level, 60 degrees. The increase in thrust was great! Almost ran it out of fuel on the first flight.

What DavidR described is how I do every new jet/engine. Go with short time and check how much is left. Really no reason to go overboard here. 78 ounces gives me adequate flight time. If you want longer, put in bigger tanks.