e2helper: this is a repeat question from a couple of months ago. I have changed my oil for 25 years now. When I did the 'Bu at 1000 miles, I could not possibly put in 5 quarts of oil as it says to do on page 5-95 (capacities and specifications). Someone on this forum recently said that the capacity was 4.5, but the manual is clear: 5quarts for the 3.5 liter engine. I put in 4 (maybe a few ounces more) the last time. Any reason you can see for the discrepancy? I always change the filter at the same time, and I let them both drain at the same time so there is no back pressure to hold oil in. It is odd that at the top of page 5-95, it says: "the following APPROXIMATE capacities....." Did the writers of this manual take a stab at the capacities??