Motor oil
Exxon / Mobil 1 Batch Code Decoder
Check whether a known ordinal-date segment maps to a calendar date—without assuming that every Exxon / Mobil 1 package uses the same code.
Interpret a known Julian segment
Choose the order printed on your package. The tool converts only the numeric date segment you identify; it does not identify plant, line, or safety information.
Enter only the date-bearing digits and select their known order.
What is documented for Exxon / Mobil 1?
Mobil packaging carries traceability information, but we have not found a current first-party public specification proving one date-code layout across every product, plant, container, and market. Use the format interpreter only if the ordinal portion is already known.
No current first-party public code specification was located for this brand. For an authoritative answer, send the manufacturer the complete code plus the product name, package size, purchase country, and a clear photograph of where the code appears.
What this tool can confirm
Whether a numeric segment, in an order you already know, represents a valid day of year and calendar date.
What it cannot confirm
That the segment is a date, which year a short digit intended, what other characters mean, or whether a product is safe or within its quality window.
Learn the general method in how to read a Julian date code, convert an unambiguous value with the Julian date converter, and read the difference between a production date and a best-by date.