All those involved in auto racing, hell, lead all who know crucialness a clean engine. In my own case is a motorsport engine is synonymous with flawless execution and fast. Over the years I learned from my father, my uncle, my friends and buddies racing on ways to keep as my car with the engine running clean.
You may wonder, that give my father a few notes while you hate it when I race. Well, I got the old one, I said it was for homework. Sons of minors and underestimated, but it worked. And he gave me my first motorcycle. But then that's another story.