How we research

1. Official documentation and regulatory sources first (EPA OBD/I/M, state agencies, publicly accessible Ford owner/service information, SAE definitions where appropriate).
2. Model/year verification before stating a procedure.
3. Owner reports treated as anecdotal and labeled.
4. Technical claims source-checked; we do not invent Ford procedures to fill a page.
5. Updates when a source changes or a correction is submitted.
6. Automated discovery never auto-publishes technical facts.