[Angrybird 12]

I found this bit on the Mobil 1 Website

Is it true that new engines need a break-in period using conventional motor oil?


That is a myth. In the past, engine break-in was necessary to remove any metal flashing (called swarf) or abrasive material left inside the engine after machining, as well as to allow the valves and rings to ‘seat’ properly. Today’s engines are built with much tighter tolerances, much improved machining and under much cleaner conditions compared to the engines of 10 or 20 years ago. Current engine-manufacturing technology does not require a break-in period using petroleum-based motor oils.

In fact, Mobil 1 has shown excellent results in industry-standard ASTM tests, most of which use completely rebuilt engines for each new test run. Mobil 1’s outstanding results in these tests demonstrate that proper break-in using Mobil 1 is not a concern. Mobil 1 can be used in an engine from the day you drive off the showroom floor.

Trust the engineers that specify Mobil 1 as original equipment (‘factory fill’) in some of the world’s finest automobiles!