1999 GMC Suburban OIL in RADIATOR

1999 GMC SUBURBAN
12,000 MILES • V8 • 4WD • AUTOMATIC
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KENNYROYJOHN
  • MEMBER
  • 9 POSTS
I am getting some kind of fluid other than water/anti-freeze. It appears to be oil. Is it possible for oil from engine to leak into radiator? Is it possible tranny fluid could get into the radiator as well? I have flushed 2 times as well as bak flushing each time also. I can get clear clean water coming out after back flush, but when I fill with Antifreeze after five minutes the coolant seems to get contaminated, with coolant appearing yellowish. Can some gaskets be worn-out?
Feb 1, 2010 at 11:36 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
You are cdealing with GM dexcool will not completly flush out. What works is flusing with Cascade dishwasher. Flush with tihs and yellow scurge will be gone.
Feb 2, 2010 at 8:48 AM
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