A 2004 Grand Prix GT will require approximately 5 quarts of oil. The type of oil required is 5 W 30.
4.33242166 US quarts
According to the 2004 Mercury Grand Marquis Owner Guide : With engine oil filter change : ( 6 quarts )
6 quarts.
if it has the 4 liter 6 cylinder than its 6 quarts of oil
According to the 2004 Mercury Grand Marquis Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts of 5W-20 )
5
Both the 4.0l and the 4.7l use six quarts.
3.5 ltter
7.5, but you'll be good with 7.
( 6 ) quarts with engine oil filter change - according to the owners manual
Fluid and filter change should require 5-6 quarts.
4 1/2 without the filter or 5 with filter