Look under the hood and the is a label with the capacity printed on it. It is very critical to add the correct amount. A little extra is NOT good.
1lb 6oz 134A
20 gallons
Five quarts
20 gallons
5 quarts
4.5 quarts
5 quarts
Five quarts
5 quarts
The tank has a twenty gallon capacity.
A 1999 Dodge Caravan does not have a cabin filter.
No.