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2001gmc 5.3 engine with 130000 mile antifreeze leak

(2001 GMC Sierra 1500)
in Anchorage, AK on November 13, 2012
replaced water pump, flushed coolant system, new coolant. coolant level will stay up and then drop for no reason. mechanic tested coolant, head gasket. nothing found. now water or coolant in oil.
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Popular Answer
on November 13, 2012
if there is coolant in the oil you either have intake or head gasket problem or possible cracked block
on November 13, 2012
ok...so...what?
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