engine coolant and antifreeze

It depends on where it's leaking from. Do you know where it's leaking? My answer will be quite different depending on where it is.

same problem with 2007 Caravan. Sometimes I find fluid under the drivers side radiator, but many times no fluid at all, however going through a gallon of antifreeze a week. Radiator pressure checked and it passed.. No leaks in bottle or hoses. Help?