I had a 2002 Ram quad cab with a 4.7. That truck never gave me a bit of any problem. Traded it in at 205,000,and the new owner is driving it with no problems.Still has the OEM water pump on it,and I never had to pull the valve covers either,in fact I never touched the engine.I did maintain it,oil and filter every 4-4500,I used 15w40 in it after it hit 9000 miles.