I have ordered an 08' Cayman S - due to arrive Nov. 12th. In anticipation I have read through several of the threads including the various opinions about break-in. I did some research and through a race engine article learned of a couple products from American Clean Energy Systems. The two relevant products are their gasoline catalyst (upper cylinder fuel additive) and their oil catalyst. From the literature both of these products sound incredible and like they have potential to ensure an ideal break-in process as well as continuing to maintain a perfectly running engine (they are also supposed to increase HP and torque along with raising the effective octane level of the fuel by 7+/- points). They don't retail directly but I think I found a supplier in MA. The supplier is HiTech fuel. HiTech Fuel - Fuel and oil catalyst distributorsAmerican Clean Energy | Home