Unseen and often forgotten, fuel filters are a small but critical part of a vehicle’s fuel supply system. Here’s what can happen if you neglect yours. Most vehicles have two fuel filters.

How Diesel Particulate Filters work How to avoid DPF problems How much is it to clean a DPF? A Diesel Particulate Filter — known as a DPF for ease — is part of a diesel car's exhaust system, designed ...