Hey all, long time, no post! I just bought a new Walker Diesel, 20.9 hp Kubota diesel, and am having some difficulty finding the right oil filter for it. Dealer is a 45 minute to hour and 15 minute one way trip depending on which I choose, so I'd much rather find something locally. I've spent some time searching for the D722 engine and come up with about 5 different filters for that engine. (wix filters) of 3 I was able to find locally they are all different sizes. I'm not pulling the filter I have until I know for sure I have a correct replacement. What have you found?? Also, the book is specifying to use 10w30 diesel oil. Well I've been to every open auto parts store and farm supply in town and no one has ever heard of 10w30 oil for diesel engines. Book also says SAE30 (diesel) can be used but only in warm weather. Should I just use 15w40 since that's what most every other diesel engine on the planet uses? Any suggestions on filter and oil would by much appreciated!