Ive just purchased two plus c4 team " ceramic edition " .21 engines. This is my first investment with a quality mill. My others have always been used ,pre-raced,clapped out engines. My question is about how to properly break in these engines. These two are NOT the pre-run versions. But with myself only concentrating on one car this year ( agama a8 ) due to budget restraints I really need these to last.

Question 1: The proper way to break these in.

Question 2: Which fuel ( Brand and % to use 20-30????

Question 3: What plugs to run ? ( Hot weather , Cool weather , SHI# Weather

I live up in Massachusetts where the weather can change in a heart beat so Im not sure on what tempature to call a hot weather plug or a cool weather plug. Ill be running the rossi pipe and manifold as well. These are 2010 engines.... Thanks for your help, Lee