Back in 2004, several automakers got together to create a more pure form of gasoline to meet strict standards set by the U.S. Environmental Protection Agency (EPA), now known as Top Tier gasoline.

Under certain conditions, the water in DEF can evaporate, leaving behind white crystal urea deposits. Over time, these crystals can build up, clogging system components and interfering with normal ...

Since January 1, 2010, on-highway vehicles sold by any truck OEM other than Navistar have been equipped with a selective catalytic reduction (SCR) system using diesel exhaust fluid (DEF). “Therefore, ...

As if it weren’t tough enough for diesel owners to find a clean place to pump fuel, they face another challenge: keeping their tanks of diesel exhaust fluid (DEF) topped off. What happens if you run ...

Every day, technical support teams at construction equipment manufacturers and dealers get calls from customers covering any number of topics. A common engine-related call involves diesel exhaust ...

Their acronyms may sound alike, but the care and attention required of DPFs and DEF are very much different. Diesel particulate filters (DPFs), of course, have been on all new trucks since 2007. Their ...