ORIGINAL: wcmorrison
You need to use fuel with 17 to 20% lubircation in it. It takes that much to make sure the connecting rod ends get proper amounts of lubrication.
Not if you're using a good quality oil.
I run just 12% oil (good quality) and with over 200 hours running on such a brew, my oldest engine shows *no* sign of big-end wear or other damage.
Not all oils are created equal.
Yes, it will run faster on the low oil content, but you asking for an inflight failure of the connecting rod. It is perferable, IMHO to have some Castor oil in the mix - say 2 to 4 ounces per gallon. That will help in case of a lean run.
Yes, my 12% fuel brew consists of 10% hi-quality synth and 2% castor.
Buy some airplane fuel. It will properly lube your engine and make it last a long time.
No, most of these buggy engines are designed to run on low-oil fuels. Some times they just don't run as well on hi-oil brews.