After changing oil in my (new to me) '05 VP 5.0 GXi-E it appeared on the dipstick as way overfilled. The manual states 6 qts, which is what I put in. Also had tall oil filter. I removed some (1 qt) to put it into the safe on the dipstick. ....So does anyone know why there would be a discrepancy between the two??? And opinions on the correct one to follow?? TIA !