Originally Posted by redball8

You run 15% nitro and 18% synthetic in your Evo 777? Heck, I run 5% nitro and 6% lube (11% of which is castor). It’s an earlier UMS/Seidel 770, but basically the same engine, just not bored out. That’s what the manufacturer (UMS) recommends. Buy yourself some pump methanol at a little over $3/gallon, and you can cut your fuel bill in third!