I changed the oil on my moms van for the first time and can not find anything on how much oil it takes.I got it perfect on the dip stick but 5 quarts on a 7.2 liter sounds low. Shop Key at my shop isnt giving any listings and i searched around on google.

So how much oil should a 7.2 liter dodge take.
Btw its a 77 dodge b300 with 128,000 og miles