I have just installed a new camshaft in my Galaxy. The previous camshaft had worn on number 2 cylinder I have run the engine for around 2 hours and and removed the rocker cover to check and found that the camshaft has some abrasion marks. on all the lobes. I had removed the head and had it reconditioned, I then reinstalled the head and all components and ran the engine for about an hour on semi synthetic 5W-30 and added engine flush for ten minutes before removing the oil and adding new oil and filter and running the engine for another hour. Most of the wear appears opposite the lobes on the back of the cam. I would have thought that the lobes of the cam would have worn first as that is where the load is. When you take the oil filler cap off, the oil seems to be moving around under the rocker cover and the oil light does not stay on so it appears the oil pressure is adequate and there is oil in the top of the torx bits so oil is getting around in there. Any one any ideas on why I should have wear after such a short time? Could it be down to oil selection? I believe the manufactureres specification is 10W-40 and thats what I'm using now. Would the (Wurth) engine flush cause this problem after 10 minutes? How can I tell whether I am getting adequate oil to these areas and where are the oil ways? Is it likely to be cam hardness? Any other suggestions. Many thanks