The 400SE owners manual specifies 8.5 (US) quarts for a complete engine oil change. When I drain the engine completely and fill it with exactly 8.5 quarts, the oil level is 2/3 the way up between the Min and Max marks. The question is should I leave everything alone, or should I add oil to the Max mark?

I have re-checked the oil level after running the engine and warming it up. The dipstick is the correct one for the engine.

Thanks