What the heck is Oil Sludge?
Every car with an internal combustion engine needs oil to run.
Oil sludge is when oil starts solidifying into a sticky hell stew that coats the inside of your engine. The sludge retains heat and starts putting severe strain on the mechanical parts of your engine. This usually results in disaster for your car and your wallet.
Preventing oil sludge is usually as easy as maintaining regular oil changes.
The 2.7L DaimlerChyrlser Engine
In some engines, oil sludge is nearly unpreventable due to a defect in the crankcase ventilation system or, in the case of DaimlerChrysler's 2nd generation 2.7L V6 engines, water pump.
Owners report that a poorly designed water pump allows internal coolant leakage which leads to oil sludge. Even with careful, regular maintenance, these engines are experiencing catastrophic failure.
Vehicles Most Affected by Oil Sludge
The defective 2.7L engine is found in many 1998-2005 Dodge and Chrysler vehicles.
|Make||Model||Year Range||Worst Complaints|
|Chrysler||Concorde||1998-2005||2000: Complete Engine Failure|
|Sebring||1998-2005||2001: Oil Sludge Results in Engine Failure|
|Dodge||Intrepid||1998-2005||2000: Oil Sludge Results in Engine Failure|
|Stratus||1998-2005||2002: Oil Sludge Resulting in Engine Failure|
An Expensive Fix
The average repair cost for oil sludge is over $4,000. The reason is simple -- once you're sludged, you need a whole new engine.
As engines get older we expect things to break. But doesn't it seem like you should at least be able to get to the century mark?
Oil sludge in the 2.7L Chrysler engine is one of the most often reported complaints to CarComplaints.com.
Quotes About Oil Sludge
Burke Brown, chief engineer at Chrysler
“In retrospect, that took away the margin. More oil means it [the oil] deteriorates slower. If you don’t change the oil on schedule, they [the 2.7-liter V–6s] don’t tolerate a lot of abuse in that regard.”Source: The Center for Auto Safety
Clarence Ditlow, Center for Auto Safety
“You have a car that goes from being a usable car to what some call a lawn ornament – you park it on the lawn if you don’t have money to fix it … this is an economic disaster for consumers,”Source: The Center for Auto Safety
“It’s not a widespread issue … or a safety issue. It’s a maintenance issue.”Source: The Center for Auto Safety
2001 Chrysler Sebring Owner
“Chrysler wanted all receipts and documents of oil changes. They stated there was sludge build up. We did come up with quite a few receipts, but not enough. We went round and round with Chrysler, for god sakes it only had 73,000 miles on it, how could it need a new engine?”Source: CarComplaints.com
2002 Dodge Stratus Owner
“For everyone having problems with 2.7 motor and sludge build up seizing the motor on your stratus I have some news. Chrysler set up a company strictly to deal with this problem. It is an undisclosed warranty. The reason for it is they don’t want people randomly replacing motors. So ask your Dodge dealer, if they don’t know anything about it they are lying.”Source: CarComplaints.com
A Picture is Worth a Thousand Oily Words
Prevention & Repair
Try and minimize the damage
If you see a sharp drop in oil pressure, drop your oil pan, check for signs of sludge and clean it out. Then buy a cheap filter and some oil and flush out your block. You will also need to clean your valves, which we recommend having a mechanic do.
Find a replacement engine
If you decide to fix your blown 2.7L V6 engine, do not put in another defective 2.7L engine. Find a mechanic to swap up to a 3.2/3.5L engine instead. Here’s why:
- The 3.2/3.5L engine doesn’t have the design defect that causes oil sludge to form in the 2.7L V6.
- The 3.2/3.5L engines are less expensive than the 2.7L, sometimes by $1,000 or more.
- The 2.7L to 3.x swap is fairly straightforward & does not require any custom parts or other major components be replaced.
Here’s a thread about a successful 2.7 to 3.2L engine swap & what’s involved.
Be careful of the "quick fix"
Some companies sell “fixed” 2.7L V6 replacement engines that supposedly have been modified to fix the oil sludge defect. We have not heard back from enough owners who have gone this route to be able to form an educated opinion on this method. Usually though, the cost of the modified 2.7L engine is prohibitive.
File Your Complaint
Start by filing complaints online. This step is crucial. Don’t just complain on forums. The sites below actually manage your complaint in ways that allow useful statistics, and they report dangerous trends to the authorities. Law firms contact these sites for help with Class Action lawsuits. Make sure to file your complaint on all three sites. We can’t stress that enough.
Talk to Chrysler
Next give DaimlerChrysler a piece of your mind. If you have the patience, lodge a complaint with DaimlerChrysler Customer Service. Specifically mention that you’re responding to their spokesperson’s comments that they only have 600 complaints on the record.
1–800–992–1997 or 1–800–521–9922
Monday - Friday, 8:30AM–5:00PM EST
If you don’t have the patience for the phone, send your complaint by mail to:
President & Chief Executive Officer
1000 Chrysler Drive
Auburn Hills MI 48326–2766
Stay Up to Date
CarComplaints.com offers fantastic email alerts that are specifically tailored to news about your car and nothing else.
That means if your car is part of an oil sludge class-action lawsuit, you’ll get an email. If there’s a airbag recall, you’ll get an email. If there’s news about adorable new puppy research, you won’t get an email because it has nothing to do with your car (no matter how cute the puppies are). It’s that simple.
And when it comes to price, there’s no late-night infomercial pricing tactics here: it’s free and you can unsubscribe any time. Get started over at CarComplaints.com and stay up-to-date about your car.
Oil Sludge News
For people buying a used car, there is a very important but rarely checked factor to consider that goes beyond kicking the tires: original sin.
Toyota Motor Sales U.S.A. Inc. has quietly settled a class-action lawsuit that covers about 3.5 million Toyota and Lexus vehicles that may have been damaged by engine oil sludge.
Drivers complain that the 2.7-liter engine is prone to seizing up, but the auto maker blames poor maintenance.