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E9 antifreeze in pan


ws721

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My E9 has always put some antifreeze in the oil pan. Drain out about 20 ounces in the spring and were good the rest of season. Truck sits all wintah. This spring I took out around 40 ounces or 4 small water bottles of antifreeze. I know it isn't good or going to heal its self. But would anybody have a guess as to whats causing this? Engine has 227,000 miles. Doesn't build pressure in radiator. It will hold pressure if I pump up in the radiator. Could be air compressor? Oil cooler? O rings around the sleeves? Head gasket? Just trying to narrow down my options

Remember if it's got a hood it's no good!

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Pull the pan and pressure test the cooling system. That's the only way to find it. If it's never been touched the o rings on the sleeves could be dried out. I had an electrolysis problem with one of my E9s and all the sleeves on one bank got pitted and one leaked antifreeze but it never went in the oil I found it on the blow by tube. On mine so if the rings are still tight in yours I'd bet money it's an o ring rather than head gasket. Could be your oil cooler but usually they put oil in the rad. But you won't know till you pressure test it.

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Just got through rebuilding my oil cooler. Did the same thing. Pulled oil pan and pressure checked. No coolant. Next place to look is the oil cooler. Big o ring was dried out. If your getting coolant in the pan during climate changes most likely an o ring somewhere.

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