You might think that with so many different 6.4L Power Strokes out there, it must be difficult to sort through all the information and figure out which engine is for you. But the truth is, if you know what to look for and have a basic idea of your needs, choosing the right engine is a lot easier than you might imagine. Getting a 6.4L Powerstroke Oil Cooler might be a good option. Here is all you need to know before getting one. What is a 6.4L Powerstroke? The 6.4L Powerstroke is a diesel engine manufactured by Ford Motor Company for use in pickup trucks and heavy-duty commercial trucks. The 6.4L Powerstroke is an inline six-cylinder engine with four valves per cylinder, the most of any Ford diesel. The 6.4L Powerstroke was introduced in 1987 as a replacement for the 7.3L diesel engine that had been used since 1980. The 6.4L Powerstroke underwent many changes throughout its production cycle, including upgraded turbochargers and fuel injection systems and improved emissions controls. B