txmatt-see my post as its for pre-mix applications. I fiddled with the rate of LC up to 20% and as low as 5% to the pre-mix oil. Finally settled on the 10% with my oil of choice. I judged this strictly by observing the exhaust gas temps (have a cool analyzer for this), smoke output, and plug deposits. I did not open up the main jets so it was fairly critical to get the right rate. Just remember that when you add too much (oil, additives etc.) to the fuel, you lower the amount of given gasoline delivered unless you compensate by increasing jet size. Most 2-stroke designers take this into consideration when recommending a pre-mix ratio as they will operate in a variety of conditions (humidity, barometric pressure, altitude etc.) But if you're living on the ragged edge of lean, open it up. Better to have too much and bog when doing the initial adjustments than to not have enough and seize. Do some plug-chops and take some reads, that can tell you alot.
And like Terry says, shelve the Sta-Bil, the FP will take care of this. Had some FP pre-mix sitting around for 7 months, worked just like when I mixed it up. Normally it goes south after about 3 months. $.02
[ November 19, 2003, 03:54 PM: Message edited by: shortyb ]