See also:

Fuel
CAUTION Use of a fuel which is low in quality or use of an inappropriate fuel additive may cause engine damage. ...

Cooling and dehumidifying in high humidity and low temperature weather condition
Under certain weather conditions (high relative humidity, low temperatures, etc.) a small amount of water vapor emission from the air outlets may be noticed. This condition is normal and does not ...

Lubrication oil circulation in the refrigerant circuit
Operate the air conditioner compressor at a low engine speed (at idle or low driving speeds) a few minutes each month during the off-season to circulate its oil. ...