Vehicle guide

Heavy Trucks

Heavy-duty systems can expose engine hours, idle history, aftertreatment evidence, and manufacturer-specific faults beyond generic passenger-car OBD2.

Heavy TruckBuying

To Buy A Used Truck

A practical narrative about using heavy-duty diagnostic data as one input when screening used trucks, comparing histories, and preparing for an independent inspection.

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Heavy TruckOwnership

To Run A Used Truck

An operating guide for turning diagnostic records into a routine for maintenance conversations, claims, trend detection, and first-year fleet decisions.

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