See also:

DOT, Tire Identification Number (TIN)
U.S. tire regulations prescribe that every manufacturer of new tires or retreader has to imprint a TIN in or on the sidewall of each tire produced. The TIN is a unique identification number. ...

Additives
Do not use any additives in the engine oil. This could damage the engine. ...

Important safety notes
WARNING Air bags are designed to reduce the incidence of injuries and fatalities in certain situations: - frontal impacts (driver's and frontpassenger front air bags and driver's knee bag) - ...