1997 Chevy Blazer brown sludge in radiator and oil

Tiny
CALLEN954786
  • MEMBER
  • 1997 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
I have brown sludge in my radiator and in my oil. What is the cause of this and how can I fix it?
Monday, June 29th, 2009 AT 4:45 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
It sounds like there may be a head gasket problem allowing the two to mix. If you change the oil on a regular basis, and the coolant is kept up, my guess is a bad intake gasket or head gasket. You can check compression to test for a head gasket leak.
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Wednesday, July 1st, 2009 AT 5:09 PM

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