after 5 oil changes you'd have 4.5 qts so you wouldn't have to buy a whole new case or jug if you only put in 4.5 qts. [rofl] [poke] [idea] And putting in too much oil isn't good... .5 qts isn't that big of a deal but definitely don't put any more than that... [thumb]When i change my oil i just pour in 5 quarts. I have the 2.0 and the spec is 4.5 quarts as well as the 2.3 engine. The extra half quart isn't going to hurt anything and then you won't have a half quart of oil laying around. It brings it up just a bit above the full mark.