Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: If the Engine Overheats
If your temperature gauge indicates overheating, you experience a loss of power,
or hear loud pinging or knocking, the engine may be overheating. If this happens,
you should:
1. Pull off the road and stop as soon as it is safe to do so.
2. Place the shift lever in P (Park) and set the parking brak ...
Hyundai Sonata LF 2014-2019 Service Manual: Compressor oil Repair procedures
Oil Specification
1.
The R-134a system requires synthetic (ND8) compressor oil
whereas the R-12 system requires mineral compressor oil. The two oils
must never be mixed.
2.
Compressor (ND8) oil varies according to compressor model. Be sure to use oil specified for the model of compressor ...