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  #16  
Old 10-01-2008, 06:10 PM
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Quote:
Originally Posted by kerry View Post
Mixing transmission oil and engine oil is virtually impossible. Having transmission fluid in your coolant reservoir is not unlikely. The transmission cooler (if you have an automatic transmission) is in the bottom of the radiator. A leak between the transmission cooler and the engine radiator is possible.
unless a transmission modulator springs a leak and atf oil is pulled into the crankcase from the vacuum system
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  #17  
Old 10-01-2008, 06:15 PM
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Quote:
Originally Posted by turbobenz View Post
unless a transmission modulator springs a leak and atf oil is pulled into the crankcase from the vacuum system
Yep.

Black color seems to indicate engine oil in this case.
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  #18  
Old 10-01-2008, 08:23 PM
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And I'm thinking non-existant other symptoms indicate a possible long term slow leak....
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  #19  
Old 10-02-2008, 08:15 AM
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As someone else mentioned, get the fluids tested to see if there is oil in coolant/coolant in oil. Many cheapo oil tests will test for coolant. You can try putting some Bar's Leaks in, but I doubt it will help on a diesel with all that compression going on. Best be looking for another engine- or do you already have one out of a parts car you had?

Rick
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  #20  
Old 10-02-2008, 08:41 AM
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The signs point to the headgasket failing between a coolant and oil passage.

Oil pressure is higher than the coolant so it will naturally flow into the cooling system when the engine is running.
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  #21  
Old 10-02-2008, 09:18 AM
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Sounds like repair time.

BUT there is one caveat to that. IF you put in some coolant additive, especially if it is soap like or bubbly, it can look like a rainbow oil slick in the reservoir. On RARE occasion, you'll get lucky but if it's jet black...
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  #22  
Old 10-02-2008, 10:05 AM
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.

I have seen people working at " quick oil change " places do some really really dumb things.

.
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