01-26-2014, 10:28 AM
The owner's manual for my wife's 1947 Chevy states "The crankcase of the engine in this vehicle as received by you is filled with a light body 'breaking-in" oil. Use this oil only during the breaking-in schedule shown below. It should not be used after the breaking-in schedule"
Clearly, break in oil has been around for quite awhile and continues to find applications.
Clearly, break in oil has been around for quite awhile and continues to find applications.
