Originally Posted by jrwoodchuck

if you are going to run the traxxas fuel, than use it to break it in. but if you are going to use something different (Nitrotane is very popular in denver), than use the traxxas fuel as a powerfull weed killer.

as for needing the higher nitro to compensate for the 5280 ft, don't worry about it. when i lived there i was able to use one less head shim and no pre-detonation issue. Look at Matty, Dustin, Lars, Kody, i'm sure the are all using 30% with no issue.