Cadillac STS Forum - 2005 through 2012 Discussion, Oil Dipstick Markings... Why doesn't anyone know what they mean? in Past Cadillac Vehicle Discussion; Hey Guys
Ive done some research on the oil dipstick markings and I cant find anything with a solid answer
curtc's post is true of Northstars. Top of the hash marks is 8 quarts, but GM changed the recommended fill level to 7.5 (middle of hash marks) to reduse oil consumption by the PCV system. Maybe they changed the recommended fill level for the 3.6 as well?