I just found my first glitch on my car. Found a coolant leak in the driveway after washing my car. Took off the potective plastic from under the car. Cheked the rad, no leak. Popped the hood and found coolant on the union sending to the engine block and the water pump. Main cause is a loose screw on fastener. My question is should I tighten the thing myself or bring it to the dealer and show em how lazy these guys are on the assembly line.