2001 Pontiac Montana Antifreeze in Oil

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SUBREW
  • MEMBER
  • 1 POST
Hi, I was driving my 2001 pontiac montana and it overheated. We put antifreeze in and it drove fine until I drove home and it started over heating again. When checking the oil there was antifreeze in it. What do you think the problem is?
Thank you,
Susan
May 7, 2006 at 11:56 AM
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BURRBRIAN
  • ✓Experienced Mechanic
  • 158 POSTS
Hi, I hate to be the bearer of bad news but you have just described the "classic" symptoms of a bad head gasket. Check your anti-freeze and see if there is oil in it. You would also get air bubbles in it with the car running. Have a good shop you trust check it out -do not drive any more than absolutly necesarry!Any more driving could cause more severe damage , stop now and all you may need is a new head gasket, oil change and anti-freeze. Good luck :cry:
May 7, 2006 at 12:54 PM
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Suggested Repair

Have a trusted shop check for a failed head gasket. Look for oil in the coolant and air bubbles with the engine running. Avoid further driving; the likely repair is a new head gasket plus an oil and coolant change.

Conversation Summary

The owner of a 2001 Pontiac Montana reported repeated overheating and antifreeze mixed into the oil after adding coolant. The expert identified classic bad-head-gasket symptoms, advised checking the coolant for oil and bubbles, and recommended stopping driving to limit damage.

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