10 year old Passat, low mileage (60k), all maintenance done at dealership on schedule, engine all of sudden has oil pressure light go off on the freeway. Had it towed and diagnostics done, plenty of oil in the crankcase but its turned to sludge. Enough damage so I need to get a new engine ($5k+ in parts alone). What caused this? Shouldn’t VW be liable to some extent since all maintenance was done properly by me? Apparently there was a known oil sludge warranty that expired after 8 years. But since I have low mileage I didnt have the problem as early as most. VW Customer Care is only offering $750 voucher toward repair or new VW. This seems like a crime! Help!!!

What was the oil change schedule (time/miles)? If there were a lot of short trips the standard schedule isn’t enough. Was there a “severe service” schedule? Was the oil level checked regularly (at least every 1000 miles) between changes? Running more than 1 qt low can cause sludge. A clog in the PCV system (not just the valve) can cause sludge. Not using oil that meets VW’s specs can cause sludge, but I hope the dealer wouldn’t do that. Is this a turbo engine? Synthetic oil is generally a good idea with those. There’s generally no need to go to the dealer to repair an out-of-warranty car. You should be able to get a good independent shop to install a rebuilt or low mileage used engine for less $$.

Oil sludging is caused by not changing oil often enough based on driving habits, enviro conditions, fuel and oil quality, and state of tune. Your car only has 60k miles over a 10 year time frame and requires a severe service schedule. Your post is a bit confusing. At the start you state all maintenance was done on schedule at the dealer and halfway through you state all maintenance was “done properly by me”. Does that mean one and the same or what?

You will find this interesting! [image] Settlement Addresses Engine-Sludge Issue In Audi A4, VW Passat A settlement made by the U.S. District Court in Boston could affect owners of 1997-2004 Audi A4 and 1998-2004 Volkswagen Passat models with the 1.8-liter turbocharged four-cylinder engine—badged for much of that time as 1.8T. According to court...

A class-action lawsuit and any settlement are often not related to mechanical principles. The bean counters weigh the costs of settlement against what it might cost in court and facing a mechanically inept jury. Every company on the planet has been sued in a class-action; often more than once. I’ve personally seen sludged engines of every make. Some of them were barely recognizeable as engines by the 25-30k miles mark and were beyond repair. The common denominator is every case was extended oil change intervals; even those stated to be “religiously maintained”.

I just love how all you guys jump on him for not maintaining the car properly when he stated that all maintenance was done at dealership on schedule.

Well, my question is, maintenance done on what schedule? By miles or time, and severe or regular? How did you drive the average 6000 miles per year? Dino oil or synthetic? All of these answers can clear up some of the grey area on your original post.

If you look at the link I posted, I do believe you will come to the conclusion this is an issue due to manufacturing specs gone bad rather than owner maintenance gone bad. In case you missed it [image] Settlement Addresses Engine-Sludge Issue In Audi A4, VW Passat A settlement made by the U.S. District Court in Boston could affect owners of 1997-2004 Audi A4 and 1998-2004 Volkswagen Passat models with the 1.8-liter turbocharged four-cylinder engine—badged for much of that time as 1.8T. According to court... I see no reason at this point to blame the owner who says he has done all recommended, and ignore there is a sludge problem as evidenced in the link provided.

Most european cars have extended oil change intervals nowadays. That means 10K between oil changes, if you use the proper oil, usually 0w40 fully synthetic However, based on the OP’s mileage, it is clear that the car probably falls under the severe usage category. That means that by the time 10K have elapsed, the oil is pretty darn old If the car only gets used only for back and forth driving, such as short trips to the corner grocery store and back, that is the worst kind of driving, and the formation of sludge is a very real possibility. Many owner’s manuals clearly state that oil needs to be changed at least once a year, regardless of usage. If that did not occur . . .

@BillyC, all maintenance done “on schedule” doesn’t mean squat. Car makers make a lot of ill-advised recommendations which also include lifetime auto trans fluid and valve lash adjustments that are unneccesary; along with the bogus recommendation of how to “audibly” inspect lash. They make those recommendations with a straight face… VW, like all others, cover themselves with a “severe service” disclaimer which applies to 90%+ of all cars on the road. The cut and paste from VW below: Q: My Volkswagen dealer is suggesting shorter maintenance intervals than what is written in my Owner’s Manual. Is this correct? A: The service intervals schedule in your Owner’s Manual is based on vehicles operating under normal conditions. In the case of severe conditions, such as extremely low temperatures and/or excessive dust, it is necessary for some services to be performed between shorter scheduled intervals. This applies particularly to engine oil changes and the cleaning or replacing of the air cleaner filter element.

VW Passat engine oil sludge failure results in no love from VW

Maintenance/Repairs

UncleTurbo October 31, 2013, 1:44am 4

I really don’t think a decent oil would turn to sludge in 5000K miles or 6 months. Some info is missing here? In a low mileage car you still need to change the oil at least every 12 months.

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VW Passat engine oil sludge failure results in no love from VW

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