I think your OK. When I break in a 4-stroke,I use Omega fuel 15%. But I add almost 2 oz. of caster oil to a gallon. I have one set aside for this. I let it idle then bring up to full throttle,but I open up my needle valve to where it hardly runs.Do this for 2 min. then idle downfor a min. then open up again and run your engine sloppy and gurgles for the rest of your fuel tank. I repeat this procedhure for about 3 tanks. Then when I fly I use 15% and 18%oil,the rest synthetic. But, this is what I do. We all have to find out what our motors like and respond accordanletly. Just like my Dog,HA.