Just a heads up, for anyone wanting to go into gas engines and wonder about what make and model there is a gas engine forum yo can read. Last time I looked there were about 30 pages on just the DLE 30. When you buy a new engine they come with instructions and should be followed. After time people new to gas can and will start doing different things but for a beginner following the instructions is the best idea. Each manufacture will want there engines run there way with products they tested. I have one Brison and it called for 100:1 full synthetic. 100:1 scares the heck out of me but that's what it called for. Other engines I have range from 50:1 to 32:1 with different types of oil. This is the beginners forum so advising on gas engines may lead some people astray. Just follow the instructions, if you want to know about one make of engine go into the gas engine forum and read up on what users have to say.