Had an 82 Accord, used Mobil1, had 248000 miles when I traded, didn't use any oil. 89 Accord, used Mobil1, had 228000 miles when I traded, didn't use any oil. 95 Odyssey, use Mobil1, has 167000 miles,don't use oil. 87 Nissan P/u, use Mobil1, has 172000 miles, don't use oil. In all these, I changed filter every 5000 miles, and topped up the oil. Changed oil and filter at 20000 miles. I think it's working ok for me. I'm sold on it, will change the Kubota to Mobil1 at next change, haven't decided about change intervals, probably go 100 hrs and have the oil analyzed to see how it's holding up.