Modern auto A/C sytems use R134a refridgerant not freon or R12. Add refridgerant to your system by accessing the "low side" fitting. It is located on the accumulator/drier near the firewall on the passenger side. The high side is near the battery on the driver side. There is no way to get them mixed up because the fittings are different sizes.
According to my Haynes repair manual, 1997 through 2000 Ford Explorer models: have a R-134a capacity of 22 ounces
approx. 1.5-2.0 lbs. of R134a type refridgerant
R134a
On a 1996 Ford Explorer : ( r134a )
freon for 1999 ford explorer =========================== r134a ( Helpfull )
R134a
R134a.
22 ozs
How much r134a to refill 2003 ford expedition
I have an 88 that originally used R-12 refridgerant. I now charge it with R134a with no problems. I didn't flush the system, I just started using the R134a one year when my stash of R-12 was gone. Works great.
A 1998 Ford does not contain Freon. It contains R134a. It holds 30 ounces of R134a and 9 ounces of oil if it is completely empty.
The "a" in R134a is an indicator. There are two gases that are similar R134 and R134a. They both have the same chemical make up which is 2 hydrogen, 2 carbon and 4 fluorine. However in R134 all of the elements stay separated in a gaseous state. In R134a the elements combine together in different ways. Two hydrogens can be bonded with 4 fluorines or 2 carbons with 4 fluorines, etc. Lower case letters are the "organization" of the molecules and upper case letters are the different blends of the refridgerant.