Other information:
Oil Specification
1.
The HFC-134a or HFO-1234yf system requires synthetic (PAG) compressor
oil whereas the R-12 system requires mineral compressor oil. The two
oils must never be mixed.
2.
Compressor (PAG) oil varies according ...
WARNING
Removing radiator cap
Never attempt to remove the radiator cap while the engine is operating
or hot. Doing so might lead to cooling system and engine damage and could result
in serious personal injury from escaping hot coolant or steam.
Turn the engine off and wait until it cools dow ...