There is a small oil cooler on the filter housing on the Td6 diesel engine. Looks like its got an oil leak around it I know there is a seal in between the cooler and the housing not a lot to buy and looks like there are only 5 bolts holding them together, Has anyone had this problem and changed it out or do the coolers blow or case crack. I do not have any oil cross contamination and the leak is minor just anoying