There's no single minimum amount of engine oil for all V8 cars. The required oil capacity varies significantly depending on the specific make, model, and year of the vehicle. It could range from as low as 4 quarts (3.8 liters) to over 7 quarts (6.6 liters) or even more.
Always consult your owner's manual. This is the only reliable source for the correct oil capacity for your particular V8 car. Using too little oil will severely damage your engine.
