driving home from work earlier on i went around a corner at about 30km/h and heard a large scraping noise from the back of the car, anyway pulled over and had a quick look and all seemed to be in order, slowly drove it home at about 40km/h (the faster i went the louder the noise became) parked it outside and had a look under the car to notice what i think is oil coming from roughly halfway underneath the car, was just wondering if anyone has had something similar happen to their skyline, what the trouble may be and an estimate on the price to have it fixed, please excuse my ignorence as i dont know a lot about the mechanical side of skylines, thanks