Longest reported life of an engine
I have an os .15 c-something in my hpi nitro rs4(first version) that has over 12 gallons of 15% nitro through it. The hpi .12 motor lasted abut 2 gallons and it had nowhere near the power of the os(.12 vs .15). I am very impressed with it so far and, although its much slower now, i hope it keeps going. I was thinking about an .18 or a trx2.5 next. This motor is sowing its wear with how hard it is to start and tune. Maybe it just needs a rebuild?