40 lbs -45 lbs what???
What is the amount of ac fluid needed for this model to be full on 2002 Saturn L300
sounds like you shouldn't be attempting this yourself. More like 16-24 ounces or .45-.85Kg. if car hasn't been wrecked in front there should be a sticker with the A/C system requirements of R-134 and oil If the measurement's only in Kg. then you should get a conversion chart (google online?) May be worth a shop and have them add dye.