Some of you may remember about a month ago I had a problem with low oil pressure light coming on the dash of my 3520. Changed oil filter and it went away. Did not find anything wrong with the filter but thought the problem taken care of. Wellllllllll, moving snow (again) the other day and on it comes! Change filter to no avail. Called the local dealer service dept at 5pm. Next morning a tech was at my shop looking at it. (What I call good service!) He found that the wire going to the pressure sensor had rubbed through on the steering. When I had changed the filter the time before I had probably bumped the wire harness because the sensor is located very near the filter. So for a while the rubbed area was no longer shorting. Never would have guessed this on a less-than-year-old machine but it happened. I'm posting this only to add to the general pool of knowledge on this forum.