Just an FYI for those of us not fanatical about only using Kubota branded oil filters. Several years ago I was grousing about the fact that the oil filter price had risen from$5 to $12 when I noticed a 4 digit number on the filter that looked familiar. Sure enough it was the same filter number from my 1995 Saturn station wagon. It's an identical filter made by Fram. Since I change the oil and filter at half the suggested interval, the savings are about a wash, but I just think the dealer overprices things like that. Don't know if this would hold true for all brands but it's worth a try. 600 hours later...no problems. Changing the oil and filter more often than recommended is something I've done with all my vehicles for 50 years and have never had even one internal motor problem. And I usually put at least 150k on all the vehicles I've owned.