I have a 2000 3.9 V8. One evening I backed my car up about 10 ft. turned it off and about 15 minutes later started it and pulled it forward to where it had been. The next morning I could not start the engine. My local LM looked at it and informed me that the engine was turning over but not firing. The timing was correct but a compression test showed very low compression - below the compression needed to fire. They put oil in each cylinder and started the car. They informed me that I needed to replace the engine (about $7,000 installed) and that they have had several Lincoln LS's with this engine with the same problem at about the same mileage as mine. It is supposed to be a Jaguar engine according to them. The mechanic thinks the rings are sticking due to varnish and that nothing can be done to repair the engine. I have always used premium fuel and synthetic oil. I trust this dealer and have been their customer for several years. Has anyone else experienced this problem and is there anything that can be done about it short or an overhaul or engine replacement? How about additives? The car now starts fine and as far as I can tell uses no oil and accelerates like a scalded dog.