| Link | Year | Month | Description |
|---|
 | 2005 | September | Automotive Sludge Problem |
| 2005 | July | sludge: Jumping through hoops to make a case |
| 2005 | March 14 | Saab adds warranty for sludge |
| 2005 | April 18 | What Causes Sludge |
| 2005 | April 18 | Automotive News Sludge Article |
| 2004 | Sept 6 | Monitors could combat oil sludge |
| 2004 | Aug 30 | Consumer advocacy group says Chryser has sludge problem |
| 2004 | Aug 30 | Who is to blame for sludge? |
| 2002 | April 8 | Toyota sludge article |
| 2002 | Feb 11 | Toyota owner spar over sludge |
