We have heard a lot of questions and discussion about the new OEM oil cooler. Questions like "Is the new oil cooler really updated? Is it really improved? At Bullet Proof DIesel, we asked these questions too. So, we bought a new oil cooler, cut it in half, and then compared it to the old, problematic OEM version. Here is what we found:
Analysis: Between the old and the new version there is an added layer of coolant pathways. With the increase from 10 coolant pathways to 11, the manufacturer has added ~10% more coolant path through the cooler.