clean running motor

[Richard Kerr]

I changed the oil just before our Glacier trip to 20w50 synthetic mobil1 {have been using synth since after break-in} Just changed it today, with 5500 miles on that oil it was still clear, looked more like it had about 2000 on it. These motors sure run clean.

[Kaw2000]

I believe if you are running fully synthetic oil you shouldn't have to change it no less than 10,000 miles.