Zoltan:

My only experience with this phenomenon was with a diesel and the culprit was the heat exchanger in the oil cooler.

> On 17-Feb-2019, at 19:52, thewestyman <zolo@FOXINTERNET.NET> wrote:
> 
> Hi to all,
> 
> Someone is asking me to fix his engine with coolant in the oil.
> 
> So far I have not seen one with this problem.  I can only think of the seal at the bottom of the cylinder not sealing.  
> But probably can be some other reason too, that I don’t know.
> Anyone?
> 
> Zoltan