Hello, I have a 2006 SLK350, 46k miles, which every once in while will drip a little fluid from where the roof, the windshield and the right side window meet. The drip is not water, it looks and feels like hydraulic fluid. The top goes up and down fine with no noises. I have looked in the trunk and don't see any leaks. Does anyone know if there are hydraulic lines that run through the roof? Shock absorbers? Or any other ideas where the fluid could be coming from?