The English manual calls for 0-15% nitro on all the engines...while italian version calls for 0-10% nitro.
Well that makes sense. I have an old ASP that says it will run with 0 to 15% nitro, but it will detonate and overheat on 15% anytime of year. It will run well on 10% in the winter, but must have 5% or lower in the summer.