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2006 Chevy Lumina excessive oil lead

Tiny
KIDWELL62
  • MEMBER
  • 2006 CHEVROLET LUMINA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
THIS 3.8 ENGINE HAS BEEN LEAKING OIL FOR A WHILE AND NOT SURE IF ITS THE MAIN SEAL OR NOT. I HAVE BEEN TOLD THAT THESE PARTICULAR MOTORS ARE NOTORIOUS FOR DEVELOPING A LEAK THAT WILL APPEAR TO BE A MAIN SEAL BUT IS ACTUALL, I BELIEVE THEY SAY ITS AN O-RING OR SOMETHING ALONG THAT LINE.
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Wednesday, December 12th, 2007 AT 9:01 AM

1 Reply

Tiny
DENNYP
  • MECHANIC
  • 1,823 POSTS
There is a paper gasket that seals a plate to the rear of the engine. This plate also houses the rear main seal. The gasket is a very common leak point. You will need to remove the transmission to access the plate.I recommend replacing the rear main seal and oil pan gasket if you are changing the plate gasket.
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Wednesday, December 12th, 2007 AT 6:41 PM

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