Hi I have just bought a Corsa 1.2 SXI 2003. I noticed a small amount of oil in my garage this morning. I have looked from bottom and top and it looks like it is coming from oil filter and running down edge of gearbox then dripping from bottom. Is this possible? Or can seal on gearbox go and cause I to leak? Sorry not really in the know with cars and every time I have took a car to a garage they seem to over charge me. Only had car a couple of days and drives spot on. If it is oil filter would engine oil need topping up a lot? Any help would be great, thanks.