Originally Posted by Nano
Either you read wrong or it's written wrong. The engine will work fine with any good fuel with 15% to 40% nitro. You don't need to use 40% nitro.
The results with 16% nitro are only slightly different. In Europe we have to use 16% nitro.
Then it must be written wrong...
http://www.peakmotors.com/peak/downl...k_rev_inst.pdf
Originally Posted by Per the instruction manual
Follow the break-in procedure, making sure a Peak CRF tuned pipe is installed, and fuel containing up to 40% nitro-methane is used.