I called 3 benz specialist and dealer to ask about leaking subframe mount. they all said "Never seen one leak before, they don't have fluid in them". but I told them I check my self and my non-benz specialist say it's leaking there . So can the subframe mounts leak? true or false? or do they want to charge me for just looking at the car. 1 guy wanted $60 to just LOOK at it. please reply as I am confused. Thanks!