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Engine overheating

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Old Sep 18, 2016 | 07:55 AM
  #16  
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Originally Posted by Karen Thomas
Good Morning, freegdr, the oil dipstick has always showed a perfect oil color or if I am in need of an oil change, it is a brown, dirty oil color. It has never been gray. I will be doing a combustion leak test today.
Excellent! Keep us posted/updated as this site is not only a forum but an archive and a wealth of information for the next guy or gal who might have your same problems
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Old Sep 18, 2016 | 08:05 AM
  #17  
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Pressure check cooling system.
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Old Sep 18, 2016 | 08:06 AM
  #18  
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Originally Posted by Karen Thomas
Good Morning, freegdr, the oil dipstick has always showed a perfect oil color or if I am in need of an oil change, it is a brown, dirty oil color. It has never been gray. I will be doing a combustion leak test today.
This is a good thing. Clear oil.
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Old Sep 18, 2016 | 09:30 AM
  #19  
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I had my oil tested by blackstone labs and it came back free of anti freeze. I still suspect I have a small crack in the head, so I am doing this today. I rented the tool from Oreilly's and bought the test liquid. Two cheap tests.

http://www.blackstone-labs.com/

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Old Sep 18, 2016 | 09:44 AM
  #20  
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Originally Posted by freegdr
What colors oil on dip stick if your loosing coolant into oil it will be grayish on dip stick.
That's not true. Mine never turned gray or milky, nor did I get the milky crap on the underside of my oil filler cap. It stayed brown and clear even when there was enough coolant in it to make the oil level rise visibly on the dipstick.

Twenty years ago you could tell if there was coolant in the oil by looking at it. That was because the water was suspended in the oil and not chemically bonded to it. Then the SAE standards for the detergent packages in the oil changed. Now the detergents in most oils are so good that they can chemically bond a lot more water to the oil without ever turning milky. Fewer and fewer oils are turning milky as the oil producers update their additives.

The only way to know for certain is to send off an oil sample for analysis. Otherwise she's just guessing, even if she has clear oil.

The milky coolant advice is one of the reasons I let my 0331 go too long. I kept reading on this very board that coolant in oil would turn it milky, and mine didn't. So even though I was losing coolant, I just thought I had a leak I couldn't find. Toward the end the oil level was showing at least a half a quart high 3000 miles after an oil change, yet the oil was still brown and clear. That's why I know for a fact that the conventional wisdom on this is wrong.
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Old Sep 18, 2016 | 02:13 PM
  #21  
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I just did a cumbustion leak test on both the radiator and the overflow tank (I saw this done both ways on youtube). The fluid stayed blue after several minutes on each.
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Old Sep 18, 2016 | 02:18 PM
  #22  
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Can an auto parts store help me with a pressure check?
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Old Sep 18, 2016 | 02:29 PM
  #23  
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Yep. Call around and see which one can do that. Worst case, check with Advance and Autozone and see if they have a tool rental program. Most do. The deal is you buy the tool, use it, and return for a full refund. In other words, free rental with 100% refundable deposit. Makes it easier for them to not have to track rentals.

Good news on your exhaust gas test! Now you know!

See my sig, #4.
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Old Sep 18, 2016 | 02:30 PM
  #24  
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Thank you Mark
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Old Sep 20, 2016 | 04:44 AM
  #25  
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http://www.autozone.com/loan-a-tools...ester-adapters
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Old Sep 20, 2016 | 06:33 AM
  #26  
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Thank you for the link, freegdr. That was kind
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Old Sep 20, 2016 | 11:18 AM
  #27  
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Originally Posted by freegdr
This is a good thing. Clear oil.

Not entirely. My Jeep had the cracked head and you never would have noticed by looking at oil. unless I caught it very early. I knew it was cracked because I had to add like 1/4-1/2 a cup of water to reservoir once a week. And then obviously visual inspection inside the oil fill cap. Even then, I had to have someone give it a little acceleration while I looked. At Idle you didn't really see the bubbles with coolant come out
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Old Sep 20, 2016 | 04:04 PM
  #28  
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Originally Posted by Karen Thomas
Thank you for the link, freegdr. That was kind
Any time...Trying to not Make a mountain out of a mole hill for ya..
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