I recieved my engine today. I also heard from the previous owner that he ran coolpower %15 !! Yikes. Could he have damaged it running that high of nitro on a brand new motor? He said it still has some breaking in to do. I've checked around and the 3 hobby shops nearby don't carry anything below 10% nitro so I guess i have to order it. What is the recommended gas to use?

I also didn't get a manual, is there one i can download online somewhere?