[tankman2]

I would suggest trying 17 qts. plus be sure to fill the oil filter to "prime" it. Then check the stick after about 2 minutes to let the oil run down. If it needs more add a qt. at a time until it hits the top hashmark on the stick. Then start the engine and run it for about 3 minutes and check for leaks at the filter. Shut it down and let it drain back into the pan for 5 minutes. Check the sticks again and add if more is needed to reach full level. Do not overfill!.