I got a 15 quart round seal able pan from the auotstore ( there cheap.) and a 9 quart square one...I use the round one for the oil pan and the square for the filter, then i either take them to the auto store since they recycle oil or transfer them into milk jugs and use them again so i can lleave the house and dump them later....i dont really loose any oil only around a quart or less in 3000 miles and my oil stays clean,
So when i go to refill it I just put in 4 gallions instead of the 15 quarts...I dont think that can hurt anything since it is a huge sump...Also make sure you pre-fill your filter it will take 1 to 2 quarts to fill it, and give it time it does soak in...
I found i can get 6 gallions in a case 15w40 rotella at the local costco, it's a wholesale club store for $42 and the filter is 8..so i have 2 gallions left over buy another case and I have 3 changes worth of oil, works out good for me since i do the 3000 instead of the factory 5000...
The Filter is tight, need to put some ump behind it...takes alot of pressure to tighten it down, unlike a gasser,,,so dont be surprized if you toghten it and start and see a leak and have to tighten it a little more