Time start thinking about filling the Diesel Exhaust Fluid or DEF tank.   This is my first truck that uses DEF and I know almost nothing about it. The truck owners manual says to "Store diesel exhaust fluid out of direct sunlight and in temperatures between 23°F (-5°C) and 68°F (20°C)."   I live in Texas.  It is impractical … Continue reading DEF Level Low – Refill Soon →