See also:

Air conditioner specification label (if so equipped)
The air conditioner specification label is affixed as shown. ...

Octane rating tips
Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy “spark knock.” (“Spark knock” is a metallic rapping noise.) If severe, this can lead to ...

Temperature
High temperatures accelerate the rate of corrosion to those parts which are not well ventilated. ...