American Petroleum Institute (API) Engine Oil Identification Symbol

This symbol means that the oil has been certified by the American Petroleum Institute (API). The manufacturer only recommends API Certified engine oils.
CAUTION!
Do not use chemical flushes in your engine oil as the
chemicals can damage your engine. Such damage is
not covered by the New Vehicle Limited Warranty.
See also:
Tire Markings
1 — U.S. DOT Safety Standards Code
(TIN)
2 — Size Designation
3 — Service Description
4 — Maximum Load 5 — Maximum Pressure
6 — Treadwear, Traction and Temperature Grades
NOTE:
†...
Dealer Service
Your authorized dealer has the qualified service personnel, special tools, and
equipment to perform all service operations in an expert manner. Service Manuals
are available which include detailed ...
Department Of Transportation Uniform Tire Quality Grades
The following tire grading categories were established by the National Highway
Traffic Safety Administration. The specific grade rating assigned by the tire’s
manufacturer in each category is sh ...


