Let's take a closer look at the underlying reasons behind a sweet-smelling diesel exhaust. Read more: 21 Popular Oil Filter Brands, Ranked Catching a coolant leak early is critical to avoid severe ...

DEF is required to be sprayed into diesel exhaust to neutralize nitrous oxides and filter particulate matter. DEF is a mixture of urea and water, so the same factors such as natural gas prices ...

Oil changes, filter swaps, and tire rotations every ... sauce to keep their emissions from being too nasty: DEF, or diesel exhaust fluid. It's a mix of deionized water and urea.

A Diesel Particulate Filter — known as a DPF for ease — is part of a diesel car's exhaust system, designed to filter out harmful particles. Unfortunately, not maintaining a DPF properly can lead to ...