2004 Mazda 6 oil in air filter

Tiny
KASTONE62
  • MEMBER
  • 2004 MAZDA 6
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 117,000 MILES
I had my oil changed and they found the air filter had oil on it. What would cause this?
Saturday, July 18th, 2009 AT 8:52 PM

1 Reply

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

This is normally due to excessive crank case pressure, have a leak down test done to check ring condition and get the PCV valve changed, start here.

Mark (mhpautos)
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Saturday, July 18th, 2009 AT 9:04 PM

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