use the 20% byrons fuel. some hyper 7 PBS's have a pull start and a black headed 8 port, and some have no pull start with a purple headed 8 port. prey that you get the pull start and black head. the black head cools better and makes tuning easier. either way it comes with a starter box and you should definatley use it. if it comes with the pull starter use that to break in the motor. if you use the starter box then the rubber wheel on the starter box will not survive, you will destroy it if you use the starter box during break in. if it doesn't come with the pull start then here is the link...

http://www.horizonhobby.com/Shop/ByC...rodID=OFN53025

good luck with your new hyper and once again, if you have any questions then PM me.