First, a clean-looking top end does not guarantee an absence of "turbo turds" in your oil pump's inlet screen.CL-46 Phoenix said:... I thought sludge, but I pulled the valve cover and it looked pretty clean. I'm about halfway through the first round of Auto-RX treatment now and haven't seen much improvement. The oil looked clean when I drained it not long before the RX treatment. Does anyone have a clue what else it could be? I've got the parts for an oil pump change and the equipment to do it with, but would rather not if I didn't have to.
I have had the same issue and changed the pump. Changing the pump is the ONLY solution once the light comes on. Hook up the oil pressure gauge and see just how bad it is but in the end your pump is gone. How, many miles on your car, I had 225k when mine went and I was lucky I got my money out of the car before it went bad. If you have all the oil changes you have done VW will pay for the pump replacment but good luck with that (you have a better chance of winning the lottery.)CL-46 Phoenix said:I've suspected the dreaded sludging problem for the get-go, I was just making the comment about the top end being clean for... well I'm not really sure. So you think I should go ahaead and change out the pump anyway, or hook up the oil pressure guage first? Or maybe go ahead and change the pump and still install an oil pressure guage? I have access to a shop with a hydraulic lift, air tools, engine hoist, and the like.