My car has a slight drip which has been happening for some time. Today while I was doing an oil change and I found the source of the drip. It would appear as if some part of the gearbox is weeping gear oil and it's weaped onto the lower gearbox mount. Looking further, I saw the weeping appears to be coming from where the passenger-side axle connects to the gearbox, though I'm not 100 percent sure about that. What would be a potential fix for this? Should I just buckle and take it to a shop?