I have a 1987 regal  grand national that has water in the oil and have put a radiator pressure tester on this system and have found a leak with the water pump and have changed it, but has anybody ever seen a tight water system still have a bad head gasket leaking water in the oil?
	
		
			
		
		
	
				
			 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		