Ok I have been using MC-1 for years and just got laughed at last night from a buddy of mine... So I thought I would ask what everyody else is using. My bud swears by Red Line and told me to switch and run it 50:1 no matter what. So I copied a paragraph from red line.com for your reading pleasure...
Two-Stroke Racing Oil
Red Line Oil’s popular two-stroke lubricants contain base oils which have the highest film strength and greatest affinity for hot metal. Because Red Line is a superior high temperature lubricant, it can be used at lower fuel to oil ratios, increasing power and providing excellent scuff protection and cleanliness. Where many two stroke oils are recommended to run at 32:1, many Red Line customers often mix their fuel at a leaner, 40:1. Red Line provides the lubricating qualities of castor oil, but provide exceptional cleanliness, with low carbon residue that dramatically reduces plug fouling and smoke. Red Line provides special protection for reformulated fuels. Dyno proven to make more power over longer periods of operating time.