How long does it take to break in a new motor?
How long does it take to break in a new motor? How Long Does It Take to Break in an Engine? The time it takes to break in an engine differs by manufacturer. Most recommend avoiding high RPMs in the first 1,000 to 1,500 miles; a maximum of 3,500 RPM is the ballpark for diesel engines, rising to 4,500 RPM for petrol. Is a Reman engine like new? If properly done, a remanufactured engine should be as good as a new engine and it should carry a warranty for a year. And generally, it should be cheaper than a fully...