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CATEGORY LISTINGS > DETROIT > Oil in coolant. [ REFRESH ]
Thread Title:

Oil in coolant.


Created On Tuesday August 31, 2010 06:46 Diesel Talk
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Dieselhawk
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Note Tuesday August 31, 2010 06:46 View thread in raw text format
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Had a call from an owner/driver who has a 14L HK62 non-egr today who is continually getting oil contamination in his coolant. He says it has been slowly getting worse over the last two years and will take a few months before it gets so bad he has to change his coolant. So far DDA have changed the oil cooler twice, the compressor twice and skimmed the cylinder head to ensure head gasket is sealing 100%. The liner heights were also checked. I'm thinking the head could be cracked but am looking for the small things first. I know leaking liner seals or injector tube seals could cause coolant in oil but not the reverse I dont think. The waterpump is a possibility but unlikely. I will get him to check the tell-tale hole is clear. There is no coolant/oil transmission cooler. The engine has done approx 500,000km or 300,000 miles.
Does anyone have any other ideas?

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 Dieselhawk
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hoove01
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Note Tuesday August 31, 2010 19:07 View thread in raw text format
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It's a pinhole in a liner from cavitation erosion. Somebody didn't check the SCA's in their coolant. Time for an overhaul. It's almost never an oil cooler on a series 60.

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 Florida Detroit Diesel- Allison Shop Foreman
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Dieselhawk
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Note Wednesday September 01, 2010 05:05 View thread in raw text format
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Thanks Hoove01, makes sense although I would have thought it would have got a lot worse by now after first starting a couple of years ago. He's going to try and keep it going until the Xmas break anyway. We'll see how he goes!

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 Dieselhawk
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westcoast
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Note Wednesday September 01, 2010 17:32 View users profile View thread in raw text format
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I agree with Hoove , 300,000 miles is,nt much - just over two years work , Check to make sure you have,nt got current drawing through you cooling system causing this ! Regards David

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 detroit
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JoeZ
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Note Wednesday September 01, 2010 17:47 View thread in raw text format
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Had the same problem two years ago on an engine with 800,000 miles and the problem existed for about 250,000 miles before getting worse. In the time previous to coming in my shop, the company mechanic replaced everything at least one time with no positive results. It never got coolant in the oil, but always oil in the coolant. Toward the end, it filally got some coolant in the oil. It ended up being a porus area in the block. We had to strip the block and pressurize the oil passages with air and with the help of some plugs and tape.... put water in the block and immediately got bubbles. Detroit Diesel gave the owner a new block.....we did the rest of the work at the owners expense.

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 One of the last 2 Stroke mechanics left.
44 years in the business and worked on everything from 53 series to 149 series. Winding it down now...time to move on.
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heavyhaulerss
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Note Thursday September 02, 2010 05:17 View users profile View thread in raw text format
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Wow! have syptoms of something wrong & wait 2 years or more to have fixed? I would be afraid to wait that long.

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 HEAVYHAULERSS
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