COMP CamsŪ Engine Break-In Oil Additive extends the durability of internal engine components, protecting against premature camshaft, lifter and valve train failure. Best of all, COMP CamsŪ Engine Break-In Oil Additive has proven to deliver long term benefits with new or rebuilt engines through continued usage. Simply pour in a bottle for initial break-in, run the engine for approximately 1,000 miles, drain the system thoroughly and then refill with clean oil and another bottle of COMP CamsŪ Engine Break-In Oil Additive at each oil change. COMP-159-12 Prices Subject to Change Copyright 2008 by Jet Racing Inc. Created by Jet Racing Inc. to better serve our customers.