Breaking-in a new or rebuilt engine isn't rocket science, but there are conflicting ideas on how to do it. One of these is the baby the mill while varying rpms for 500-1000 miles. The other, that I subscribe to, is to run a warm engine up to higher rpms, then compression brake. In other words - drive it hard. No matter what we believe about correct break-in procedures, no one argues that the type of oil used during break-in is critical.
Comp Cams has introduced a new engine break-in oil. Here's what they say:
Performance leader launches new lubricant product designed specifically for use by professional engine builders during break-in of new and rebuilt engines.
With the current government regulations, today’s oils are missing many of the critical ingredients needed for engine protection. Engine builders and performance hobbyists are being forced to add in extra protection additives in order to maintain engine safety and performance – but not anymore. Engineers at COMP Cams® and Endure Performance Lubricants™ have been working hand-in-hand to develop a full line of automotive lubricants, the first being the ZDDP-enhanced Engine Break-In Oil that provides maximum protection during initial engine break-in.
Heavily tested and proven by the COMP Cams® R&D team, this advanced lubricant provides maximum engine life while also allowing it to reach its full performance potential. It does so by improving the surface mating of valve train components (especially flat tappets), rotating assembly, rod journals, piston rings, valve guides and other vital areas of the engine. This proprietary formula includes the optimum amount of critical additives ZDDP (Zinc & Phosphorus), Molybdenum, detergents and high grade base oil.
The multi-viscosity, mineral-based COMP Cams® Engine Break-In Oil is fully-formulated and requires no additives or supplements. In addition, this product from the most trusted name in valve train technology is fully compatible with gasoline, methanol and high octane racing fuels.