ORIGINAL: RCtruckRacer
For someone without a lot of experience, I always recommend following the manufacturers directions. You can't go wrong there. But, I believe what you are referring to is the heat cycle method made popular by Steven Bess and Ron Paris.
Its about pp 3 in this link: [link]http://www.nitroreview.com/hintstips/ParisRacingEngineTuningTechTips.pdf[/link]
Also made popular by the number of people complaining that they have killed there engine after 1.5 to 2 gallons. Heat cycling is good for the pro racer but for the weekend warrior, the slow idle method works best and is far easier on the neighbours ears.