You may laugh at the thought of a 4000 grit polished ball being for heavy patterns, but I saw a guy throwing one of these at a tournament this past weekend. We were bowling on a modified Chameleon pattern, and he did seem to be able to send that ball wider and get it back from further out than the rest of us. The guy did have some hand, but he wasn't like Robert Smith and the rest of us like Walter Ray. I can tell you this; he was able to get that 4000-grit polished ball back from further right than I could get my Taboo back from. Now, this was a very limited sample size, but I do believe this ball can handle a pretty fair amount of oil.