Originally Posted By: Boss302fan
I own a 2004 Impala SS 3.8 engine and 4.5 quarts of oil with the correct oil filter, takes it right to the full line...
My experience has been the same as Boss302fan. While things could differ across the various 3800 series and the particular vehicles they're in, 4.5 quarts was always the right amount for me in the past in my 90 Regal, 98 Grand Prix, and 99 Grand Prix.