About the desk
Specifications need receipts
Zam Green is an independent vehicle service-spec and running-cost reference edited by Uzman Munib.
How we work
We transcribe service facts from manufacturer owner manuals, service information and towing guides. EPA and NHTSA records supply fuel economy, catalog, recall and safety data. Each published record names its source and access date.
We do not estimate missing capacities or copy a value across engines. A year sheet needs at least six populated service fields before publication.
Review and corrections
Compiled records receive a source check before publication. Official API data is refreshed separately and committed before a build. Readers can request a correction; include the exact vehicle, engine, field and supporting manufacturer documentation.
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