the worst part of the 2.7's, is the water pump is internal to the motor. When it starts to leak, you likely would never know it. The water leak drops directly into the oil sump, mixes with oil and destroys the bearings, and rotating crank and rods. It also fouls the oil pressurized automatic chain tensioner, then the chain(s) fails or jumps time and you have 4 cams, 24 valves, 6 pistons beating each other to death. Catastrophic engine failure. I hate to admit I learned this firsthand.