If you're looking for a high-quality engine break-in oil, Royal Purple's 11487 is an excellent option. It's perfect for flat tappet and roller cam engines, and it meets or exceeds all manufacturer specifications. Plus, this oil is proudly made in the USA.
11487 is formulated to provide maximal protection against wear and tear during the engine break-in process. It coats all metal surfaces with a tough film that resists scuffing and scoring, thus preventing damage that can lead to component failure down the road. Best of all, this oil is compatible with both gasoline and diesel engines.