Why We Replaced This Customer’s Entire Fuel System: A DEF Contamination Log
One gallon of DEF into the fuel tank of a 2021 Ford F-250 6.7L Powerstroke. Key turned to “On” to check for a warning light. The lift pump ran for 6 seconds. In those 6 seconds, urea-contaminated fuel moved from the tank through the lift pump, through the primary fuel filter, and into the inlet […]
Why This Catalytic Converter Failed Again After 6 Months: An Oil Consumption Audit
The second converter failed the same way the first one did: P0420 code, high exhaust backpressure, and a borescope image showing channels packed with gray-white ash. The customer had spent $780 on two catalytic converters in eleven months and was standing in our shop asking why. The answer took us about 45 minutes to find: […]