Though this is yet another oil debate....I have to speak up and agree with Bob. Good oil, mixed 32-40:1 tuned properly and you will have a clean, happy and good performing engine. After all I have learned and seen regarding the hype over oils, their brands, types and mixtures, there isn't one I would dare mix at a ratio leaner than 50:1.

Some 'popular' oils really leave a lot of carbon deposits, especially when improperly tuned, which happens all too often.

I burn Pennzoil 40:1 in all the garden equipment and hobby engines...tearing em down to inspect em at season's end reminds me why I do.

Chad