I made a note to myself to research about gas stations and the reasons why they charge for air and water. From the California Department of Food & Agriculture:
Gas stations are required to provide air and water free to customers who buy gasoline or diesel. You may have to ask the attendant for a token or to turn the equipment on for you. If the attendant does not give you a token or turn the equipment on, posted on the equipment is the 1-800-356-7057 number where you may call to file a complaint. You may also submit a complaint form online to the Division of Measurement Standards.
Related to that, here’s some tire pressure links:
- Check & Fill Tire Air Pressure (Gemini Automative Care)
- Air Pressure – Correct, Underinflated, Overinflated (Tire Tech)
- What’s The Right Tire Air Pressure? (VIA Online)