I start using this fuel about a month ago and I been having good results with the fuel I fly pattern I'm using 30% on my YS 160 and the engine is running grate I didn't have to do any adjustment to the pump also Im running in my t-rex 50 and actually I close the needle to get back to the temperature I was running with the other fuel so that's mean I got extra power I encourage to give a try you will not be disappointed.