Originally Posted by
marki
Ok both Ryans, I got my new cl7b today, Going to ask a newb question.
What fuel mix do you recommend for run in and there after.
I see in the book no more than 15% nitro for run in and use 10% castor with no mention of synthetic.
I normally run 25% nitro 8%klotz synth and 4% klotz castor
Sounds like old school Italian break-in method. Low nitro, high castor oil. Contradicts the new way guys break-in engines by using the same fuel they race with. Try Omega 5% or 10% fuel for break in. Its low nitro and has 17% synthetic/castor blend. Its aero fuel, but I have used it on many engines and so have others here in forums with no issues. Gets engine hot enough, without getting too lean and plenty of lube for break-in. I've been eye-ballin getting one of these CL7B's to try.