Based on data for previous (2006) models, it will require around 4.5 quarts, but for the most accurate information, check your owner's manual. There should be a section in the manual with fluid capacities.
4.5 quarts with oil/filter change.
The 2008 Honda Accord has 16 valves.
5 quarts
4.5 quarts with filter change.
4.5 quarts with oil/filter change.
4.5 quarts with oil/filter change.
4.5 Quarts
4.5 Quarts with filter change.
4.5 quarts with oil/filter change.
4 1/2 quarts
4.5 quarts with filter change.
95 Honda accord ex 4 door sedan takes 4.5 quarts of oil if changing the filter 2!!!!