I changed my oil today and noticed i poured out 4 quarts
when i changed my oil before i put in 5 quarts
so i burned about 1 quart
is this common....or do i have a problem
i have been using mobil 1 5w30 and changed it after 4500 miles
and i do alot of highway driving where my tach is always between 3 and 4k.