This may not be the most applicable thread, but I didn't see a better forum to put it in. If you need to change oil, I found Balwin Duece oil filters P20D-HD for $7.23 and 5-ton oil filters P999HD for $10.89 on drillspot.com. Shipping was free and they got here real fast. Sam's club has Delo 15W-40 oil, 3 gallons for under $20. That is less than $7/gallon. I know a lot of people like spin on filter kits, but for the few miles a year I use these, the stock filters should be fine.