Sometimes it is under the car on the front passenger side, the other is on top.
Low pressure valve.
under the air filter box
high pressure valve on bottom, with blue cap low pressure on top, also blue cap
Not antifreeze, that is special oil for the ac compressor with some dye in it to help trace refrigerant leaks.
On most it is under the car near the leaft siade of the radiator. *There is a valve on the aluminum line with a what looks like a tire valve cover on it remove the valve cover and it will expose the ac valve.
Either bring to a professional or buy a kit at Wal-Mart or auto parts comes with instructions
The low pressure service port, which is the smaller one.
The 2002 Dodge Grand Caravan air conditioning recharge valve is located on the air conditioning compressor. The recharge valve will be labeled as such.
Behind the grille
Have the high pressure valve checked.
the low pressure valve is on the passenger side. follow low pressure line and you will see it
How do you reset ac after refill for Mercedes e430 2000