good evening the sires specialists, I have been kindly referred with my question to this forum. after a short keyword search I have the impression that I should probably post under the rubrik kinderfasching. but nevertheless: have recently heard from aceton as an additive to sprit savings, seems in the English language area nothing new to be. however in German there was nothing instructive to find. the recommendations there were 2.5% aceton/l sprit. what keep the experts and t fanner of it. thank you for replying. debolt