Speaking just fluid measurements, 4 quarts equals one gallon. So you would need one more quart (5 total). You will probably want to get one extra quart (6 total) based on oil consumption issues of these engines. Some people that check for it notice issues, but there are plenty of others that don't. Your call.
Last edited by diddy535; 11-17-2012 at 11:54 AM.
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