Should your fleet start fitting bypass filters? Bypass filters have long been the standard way of cleaning engine oil. But in recent years, the marketplace has seen new technologies from upstart ...

While engines, especially light-duty diesel engines, have become far more advanced over the years with the addition of high-pressure common-rail direct injection, sophisticated turbocharging, and ever ...

Last month I discussed how oil doesn’t wear out but needs changing only because it becomes too contaminated to do its job. Changing oil at an arbitrary mileage points to only two scenarios, both bad: ...

In the beginning, our truck engines didn’t come with oil filters and service intervals were incredibly short. Eventually, the factory full-flow oil filters we have today came on the scene and added a ...