DEF is a key component in lowering pollutants emitted from diesel engines, helping to improve overall engine efficiency and reduce harmful emissions.

What is diesel exhaust fluid and why is it more important than ever? Diesel truck enthusiasts, long-haul truckers and especially fleet managers collectively had a Chicken Little moment way back in ...

For most diesel-powered engines, DEF is vital so the vehicle performs at its best. Here's what it is exactly and what the acronym stands for.

Generally, DEF has an average shelf life of 12 months. Estimates, however, can vary based on several factors. For instance, if you store DEF in direct sunlight or high heat, its shelf life will ...

Diesel exhaust fluid, or DEF, is a key component in lowering pollutants emitted from diesel engines, helping to improve efficiency and reduce emissions.