Most V-8's take anywhere from 4-5 qts. I can't tell you how many liters that is, not a metric person. Best bet to find out how many is go to an site like Fram.com. They have a chart. As far as the rear goes, you just drain whats in it and take out the plug on the side of the housing. You fill it up there and when it's full the oil will come out the hole. As soon as it starts to come out the fill hole.........it's full.