When owning or servicing a diesel vehicle it’s important to recognize how different the engine technology is compared to gasoline-powered vehicles. The differences have a significant impact on the approach to routine diesel engine maintenance such as what oil is used and how frequently filters are changed – especially oil filters, air filters, and fuel filters. Diesel fuel is by nature, quite dirty, so it makes sense that the fuel filter is one of the most important filters on any diesel application. They usually require a change every 10,000 to 15,000 miles whereas a modern gasoline fuel filter could go 100K+ miles before a change is needed – if at all.

A diesel fuel filter ensures that fuel is clean before it reaches the injectors that feed the engine. If a filter is dirty or clogged, you may find it difficult to start your vehicle, or you may notice it idling roughly, perhaps sounding ready to stall. Most diesel engines have two fuel filters: The primary one is found somewhere on the fuel line between the fuel tank and the engine, while the secondary filter is typically located near the engine. Before colder weather settles in, it’s advisable to change both filters.

When owning or servicing a diesel vehicle it’s important to recognize how different the engine technology is compared to gasoline-powered vehicles. The differences have a significant impact on the approach to routine diesel engine maintenance such as what oil is used and how frequently filters are changed – especially oil filters, air filters, and fuel filters. Diesel fuel is by nature, quite dirty, so it makes sense that the fuel filter is one of the most important filters on any diesel application. They usually require a change every 10,000 to 15,000 miles whereas a modern gasoline fuel filter could go 100K+ miles before a change is needed – if at all.

The primary purpose of a diesel fuel filter is to protect the fuel system components of the engine. A diesel fuel filter must be designed to remove extremely small particles to prevent the premature failure of these components. Many diesel fuel systems contain several fuel filters including a primary and secondary filter, as well as a fuel screen located at the fuel tank or transfer pump.

Diesel engines have multiple fuel filters because incredibly small particles must be filtered out of the fuel before it is injected into the engine. This is true whether diesel is at work in a mine, on the water, in a field, or on the road.The debris a diesel equipment filter catches is sized in micrometers, also called microns. For context, a single grain of salt is 100 microns. The particles filtered by a diesel fuel filter range anywhere from 3 to 15 microns, depending on the type of diesel fuel filter and its location in the engine.

When it comes to maintaining the efficiency and longevity of your diesel engine, choosing the right diesel filter is crucial.

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