Milky colored oil

1998 CHEVROLET BLAZER
146,000 MILES • V6 • 2WD
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KATHY GRUNDEMAN MARQUEZ
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  • 1 POST
Car just shut off didn't overheat. when I tried adding water to radiator oil and water came out from under car radiator will not hold water just pores out under car.
Jul 17, 2019 at 7:18 PM
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SCGRANTURISMO
  • ASE Certified Mechanic
  • 4,897 POSTS
  • ASE Certified Mechanic
Hello,

If you have oil mixing with your vehicle's coolant this is a sure fire sign that you have a blown head gasket. Here is a link for you to go to:

https://www.2carpros.com/articles/coolantantifreeze-in-the-engine-oil

Please go through this guide and get back to us with what you are able to find. If you want to replace your vehicle's head gasket, just let us know and we will give you step by step directions on how to do this.

Thanks,
Alex
2CarPros
Jul 17, 2019 at 7:31 PM
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HARRY P
  • ASE Certified Mechanic
  • 2,292 POSTS
  • ASE Certified Mechanic
That could also be a sign of just a failed radiator and some other issue. This truck has an oil cooling pipe in it that goes into the radiator on the driver's side. If that pipe leaks, oil and coolant will mix, and the results could be disastrous if the leak isn't detected in time. That's why I don't suggest using straight water in it, as water will rust through that pipe, or the transmission cooling pipe in the other side, resulting in poor to no protection/lubrication for your engine.

Check your engine oil. If it's not milky or watery, then you just might still be okay. Pull your spark plugs and see how they look. If they're all dirty, then we're probably okay. If, however, one or more of them are super clean, then they've had water on them. I'll add to my write up later, but for now I have to go to my other job. Check what you can and report your findings here.
Jul 18, 2019 at 4:51 AM
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