Have you searched on sludge? If your oil pressure tests out to be low on the 1.8t, it's generally coked oil blocking the oil pickup screen. An engine flush won't get rid of the coked oil. You will need to drop the oil pan which is not an easy job on the 1.8t, manually clean the screen, and you will probably want to replace the oil pump.i purchased it about three weeks ago, and ive already had to replace the abs module, and cv boots. it has 139k miles but runs great for the mileage. im have the oil pump checked this weekend, and im also having the engine flushed to remove any sludge.