1997 Chevy Blazer brown sludge in radiator and oil

1997 CHEVROLET BLAZER
170,000 MILES • 6 CYL • 4WD • AUTOMATIC
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CALLEN954786
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I have brown sludge in my radiator and in my oil. What is the cause of this and how can I fix it?
Jun 29, 2009 at 4:45 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
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.
Jul 1, 2009 at 5:09 PM
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