EPA Tier 4 Emission Standards, SCR, and the Future of Diesel Trucks
Leading into 2027, the U.S. Environmental Protection Agency (EPA) is updating its guidance to keep diesel trucks on the road and improve air quality—while ensuring that fleets like Williams Logistics can meet compliance without losing operational reliability. The intersection of stricter Tier 4 emission standards and innovations in selective catalytic reduction (SCR) technology is reshaping … Continue reading EPA Tier 4 Emission Standards, SCR, and the Future of Diesel Trucks
What is DEF for Trucks? How Much DEF Does a Semi Use?
Diesel Exhaust Fluid (DEF) is an essential component in modern diesel engines, especially in trucks and other heavy-duty vehicles. DEF is a non-toxic, colorless, odorless, and non-flammable solution consisting of purified water and urea; it is injected into the exhaust stream of diesel engines to break down harmful nitrogen oxides (NOx) emissions into harmless nitrogen … Continue reading What is DEF for Trucks? How Much DEF Does a Semi Use?
