On apparatus equipped with a Diesel Particulate Filter (DPF), what must the driver/operator check?

When operating an apparatus that is equipped with a Diesel Particulate Filter (DPF), it is essential to check the Diesel Exhaust Fluid (DEF). The reason for this is that DEF is a key component used in selective catalytic reduction (SCR) systems, which work in conjunction with DPFs to reduce harmful nitrogen oxides (NOx) emissions from diesel engines. Maintaining an adequate level of DEF is crucial for the proper operation of the emissions control system and to ensure compliance with environmental regulations.

If the DEF level is low or depleted, it can lead to a decrease in engine performance and the engine may enter a reduced power state or even become inoperable until the DEF is replenished. This ensures that the emissions control system functions effectively, contributing to lower environmental impact and compliance with emissions standards.

Checking fuel type, oil levels, or brake condition is also important for overall vehicle maintenance, but these do not directly relate to the operational status of the DPF system or the emissions control processes it employs. Focusing on DEF levels ensures that the vehicle adheres to regulatory requirements and maintains operational efficiency.