I have the exact symptoms as illustrated above, which started the past winter, I also noticed around the same time that the Oil Level light (amber) comes on after I start the vehicle for up to 20 sec then goes away ( Oil is fine). Are these related or do I also have a faulty oil level sensor? The idle thing happens most morning only and then when I drive away it seems to go away. I do notice a degradation in performance… What is the best thing to do, should I wait until for a possible find of some new O rings? Will things get worse or damage anything else? Can I change this myself very handy.. If so does anyone have instructions on how to change?