I did an oil change w the called for amound of 6 quarts. After driving it for a few days I checked the oil and noticed it didnt read anything on the dipstick. I put another 3/4 of a quart in and it finally registered on the dipstick. Now when I start it up it kinda smokes a little right at the initial fire-up. After that it seems cool. Should I take some out or is this not big deal? It's a 03 Mach 1. Do they have bigger oil pans than the GT's?