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Unread 06-21-2013, 02:16 PM   #1
Pierre_r
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1989 XJ Cherokee 
 
Join Date: Jul 2009
Location: Sweden
Posts: 525
Non jeep weird waterleak

I have a 1982 Chevrolet C20 with the 6.2 diesel.

Everytime i check the coolantlevel its always missing about 5qts.
I have checked the oil and it looks ok and the level never changes.
It dont leak on the outside of the engine and if all that water would be in the cylinder it would have thrown a rod a long time ago.
It dont smoke like they do when there are coolant in the cylinders either..

I though that the transcooler in the radiator maybe had sprung a leak and let the water go in the trans but then i would have had ATF in the coolant and there are no oil in it + the trans would have quit a long time ago.

Its always 5qts that is missing and never less or more, even if i let it sit for months its always just 5qts that have disappeared....

So does anyone have an idea of where my coolant is going?

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Unread 06-22-2013, 09:07 AM   #2
Newtons3
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2006 TJ Wrangler 
 
Join Date: Feb 2013
Location: Baton Rouge, Louisiana
Posts: 722
How has it been maintained? The 6.2's needed the cooling system maintained well and a good dose of additive like DCA or similar. I've had several high-mileage engines with head and/or intake gaskets that disintegrated. The worst was a head gasket leaking as you describe (no water in oil, nothing visible) with a groove (sort of) worn under the gasket to the outside edge of the block.
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