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2003 Volkswagen Passat Oil Sludge Affect Turbo?

Tiny
RGEBBIA
  • MEMBER
  • 2003 VOLKSWAGEN PASSAT
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 97,000 MILES
I recently had to have my engine replaced on this car due to a known oil sludge problem. Thankfully, it was covered under a special extended warranty. When I drove out of the dealer's repair shop, the engine light came on. After a few days of diagnosis, I was told that the turbo had failed but it had nothing to do with the oil sludge problem in the engine. Everything I have read about turbos indicate that proper oil maintenance is required for proper function. I changed my oil religiously with synthetic oil. I am out $1500 for this turbo repair and would like to know if I have a case against VW or is it likely that the two problems are mutually exclusive?
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Wednesday, December 26th, 2007 AT 3:33 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

The the turbo is basically an air pump driven by the expanding exhaust gasses. The turbo runs at extremly high temperatures and relies a good oil flow for lubrication and cooling, the oil will dissipate a huge amount of heat. If the oil gallery was still partly blocked by any sludge that restricted the oil flow, this may have had a bearing on the turbo failing. Unfortuanately you may be at ends to prove anything, but see how you go with a bit of extra knowledge.

Mark (mhpautos)
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Wednesday, December 26th, 2007 AT 3:45 PM

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