A lot depends on where you live and buy your fuel. A couple of European countries sell nitro as cheaply as in the U.S. Most tax it into near oblivion.<div>If you can get it cheap, why not use it if the engine uses it without problems. Everything I have run so far takes 15% just fine and I never bother with any other percentages. This won't work for everybody, but it is nice for the rest of us.</div><div>
</div><div>Not every r/c item has a great price tag here in the U.S. Marketing kills us on Japanese engine prices compared to other parts of the world. Australia comes to mind. We are paying more than other countries for some Chinese gas engines too.</div>