Just purchased a Cub Cadet ZT2 60” with a Kawasaki VR730V (24 HP). They call for 10-40 to be a general use. I have a a bunch of 5-30 Pennzoil Ultra that needs used up. Think I should be good? Also, I have a bunch of Fram Ultra filters that will fit it, but are about 3/4” longer than OEM. Think I...