2000 Pontiac Grand Prix oil in coolant

Tiny
BLUE44332
  • MEMBER
  • 2000 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
What causes oil in radiator?
Wednesday, October 7th, 2009 AT 10:58 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
If motor oil, a head gasket could be leaking oil into coolant.

If it is just in the radiator and is red, it is from transmission oil cooler in radiator, it has ruptured and the radiator would need to be replaced.

If coolant is in crankcase, STOP driving. Coolant will wash the oil film off main and cam bearings and cause MAJOR engine damage.
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Thursday, October 8th, 2009 AT 9:25 AM

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