[R. R. Imes] I purchased a 2000 Hurricane Class A motor home with the Ford V-10 6.8L engine a few months ago. This engine is the 415 cubic inch motor with 275 horsepower. The specifications manual shows the engine oil refill capacity including the oil filter change to be 5.7 liters or 6.0 quarts of 5W-30 oil. However the oil level on the oil dip stick shows the oil level to be nearly a quart low with 6 quarts. I have talked to the Ford RV customer service folks about this and they claim that some of the Ford V-10 engines had the incorrect dip stick manufactured, installed and shipped out in some of their Ford V-10 products. I have talked with one owner of a 2000 Hurricane like mine and this person claims that his spec manual states that the V-10 requires 7 quarts of oil with a filter change?????????? I'm confussed, does anyone have the correct information about these engines? If it is truly only a 6 quart capacity will adding an additional quart hurt anything. If anyone has knowledge of this oil capacity difference and those of you running Ford V-10 engines in you motor homes I would like to hear of your experience in this area. Is it 6 quarts or 7?