Any seals that prevent coolant from entering the engine oil? I know a head gasket can rupture and cause that but are there any other seals that may wear out and cause coolant to leak into the engine oil? There is no oil at all in my coolant. Just coolant in the engine oil. A mechanic I know is thinking there must be a seal that is worn out since I have the head gaskets replaced 5 years ago and only have about 9,000 miles on them.

 

Aside from head gaskets, the oil cooler is the only other spot. Unless of course your front cover gasket failed.

 

Most likely have a ruptured oil cooler

 

Oil cooler was changed out about 7 years ago...and 30k miles

 

I did an oil change as soon as I saw coolant in oil.. havent run the truck since. .. today i check the oil stick and there is coolant in it!! And the truck has not been running at all!!! There must be a leak somewhere..... question is: if truck is not running and coolant is leaking into engine oil on dip stick... would it come from front engine seal or oil cooler? No oil sludge in coolant.
or could it still leak from head gasket without running engine.. mind you.. before I changed oil the first time truck wasnt running.. so truck has not been running for 2 weeks.. did oil change 1 week ago and now coolant in oil

 

The other way you could have coolant in the oil would be a cavitated front cover

 

going thru same thing at the moment....mine was faulty oilcooler clogged and ruptured...

 

Oil cooler will normally allow oil into coolant more than coolant into oil. As you stated that you have coolant in the pan without running it, I would pull the valve covers, pressure test the cooling system and look carefully inside for the leak. If you have or know someone with an endoscope you can get a pretty good look inside for where the coolant is coming from.