the high pressure switch on my 96 contour gave out and the pressure build up to high and the high pressure side fill valve blew... bought a new one for $20.. replaced it and used two cans of R134 to fill it up....look on the R134 cans to see how much they hold( i am sure they have the metric equivalents)....
i just checked one of my old cans and it was 12 Oz.
= (340 g.) hope this helps...
