What is the oil capacity of 1987 E350 6.9 diesel?

The oil capacity of a 1987 Ford E350 with a 6.9-liter diesel engine is approximately 8 quarts (or about 7.6 liters) when using a standard oil filter. If a larger filter is used, the capacity may increase slightly. It's always a good idea to check the owner's manual or consult with a mechanic for the most accurate information.