Are you guys sure about 20:1? That is hella rich. You must get a lot of fouled plugs at that. Most use 25:1 for break-in (the manual says to, as well) then go leaner. I tried 50:1 for a while, and I noticed a difference in power, but the decrease in lubrication caused me to run hot, and lose power after riding for a while. Since this is no good for the engine, I have switched to 40:1, and I am happy with it. An added bonus is less mess from the unburned oil that comes out of the pipe. And just to be safe, I only burn premium gas in my stock engine and my 13:1 compression engine. |