Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
... Which oil do you use and what change intervals?
Here it is: http://forums.sohc4.net/index.php/topic,182917.msg2117148.html#msg2117148
On a side note, one of the reasons for CX500 cam chain wear was due to V angle the camshaft went from no valves open to most valves open in a short part of revolution