Lucas Oil engine break in oil is designed to provide the optimum balance of protection on first start up along with allowing critical piston ring bedding. This break in oil has a very special additive package developed to allow your engine components to bed in without unwanted wear.Protects new engines on first start upPromotes piston ring bedding for optimum sealing and compressionZDDP additive for increased protection throughout the break in periodReduced detergent levels to allow maximum efficiency of ZDDP additiveThe most critical time of any new engine is the first 20 minutes of running. New components need to 'bed-in' and in the case of piston rings this process determines how good the ring seal will be, which can effect engine performance down the line. By using Lucas Oil break in oil your are providing your new engine with the perfect balance of protection and bedding-in on critical components. Ultimately this process can be the difference between a good engine and a great engi