Water in my oil
That is usually an indication of a blown head gasket, cracked cylinder head or a cracked block, with that kind of mileage it could be all three, only thing to do is too pull off the heads and see what it looks like inside and have the heads checked.
These engines had problems with the intake manifold and it may be just a bad intake gasket or the intake is plastic and broken, replacements are available at reasonable cost
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