Smart money is on the intake hose on the compressor outlet is leaking. The oil is from the crank vent.
blocked oil return line?
Take the hose back off, clean it and the turbo thoroughly and apply a very slight smear of permatex rtv on the outside of the compressor outlet. Tighten it down and let it cure. Andrew
Aside from the turbo not building boost or the fans rubbing the housing, the turbo doesn't usually impact mileage.I'd focus on the SLEW of other significant mileage affecting possibilities.
I'd start by cutting your cat out of there if you haven't done so already.
Coke, one of the moderators at the vwdieselparts forum recently posted a 23.6% increase in fuel economy from 38 to 47 MPG(U.S.) by doing the FREE adjustment of the pump internal pressure regulator as outlined in this thread:http://vwdieselparts.com/forum/viewtopic.php?t=5936Andrew
Most of the ECO pumps came with the "pedestal". Are you sure yours doesn't?
The pedestal serves no purpose that I have ever been able to decipher and most of the pumps did not come with one. Consider yourself lucky. You can simply remove it when you are done with the test and thread the return banjo directly into the pump.
Quote from: flapjack on July 03, 2009, 09:09:52 pmblocked oil return line?I would think that would ruin the turbo completely pretty quickly. This one spins freely.