Next-Gen Diesel Emissions vs. Tucson Extreme Heat
Tucson’s extreme pavement heat cooks diesel exhaust fluid (DEF) right in the tank, dropping the urea concentration below 31.8% and causing it to off-gas ammonia. At the same time, crawling through city traffic keeps exhaust temperatures below 200°C, which builds up solid cyanuric acid crystals that choke the SCR mixer and force an automatic engine […]