See also:

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. ...

Other markings
The following makings are also placed on the sidewall. ...

Feature of distance marker
1) 3 feet (1 m) line 2) 6.5 feet (2 m) line 3) 10 feet (3 m) line The distance marker shows the distance on the road. If there is a car or other object close behind, distance cannot be correctl ...