Originally Posted by
whatthefuggy
whats the best break in fuel for the r21? where should i buy it? how much should i buy?
i recommend byrons gen2 race 3000 blend /11% oil (lots of castor)
Neal at clockwerks likes th hpi purple rush RTR blend i believe , lots of oil i believe 18%
both great break in fuels
i would at least run the first gallon with either of these fuels