My previous reply should have noted that the crankcase capacity in the Workshop Manual includes the capacity of the original oil filter. My experience is that 6 quarts is usually close to capacity if you have a spin-on filter. Also, with a spin-on filter you should fill it as much as possible before installing it and in any event check the level on the dipstick after 5 quarts. I assume that you know that shouldn't overfill the oil. Have fun!