Join Date: Sep 2013
Location: Nova Scotia, Canada
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In most cases like yours, with coolant in the oil or vise-versa after an overheating, a blown head gasket is the culprit....not a failed water pump seal.
But, you can check the water pump seal. To check the water pump seal, simply remove the drain hose tube from the nipple on the bottom of it water pump. Using a toothpick, put it in the hole of nipple and see if it clogged with dirt/mud. If the hole is clean and nothing is leaking OR if nothing comes out after you clear the obstruction, then you know the water pump seals are fine.