1999 Cabrio 2.0L oil leak
 

Have just purchased '99 Cabrio and found a nice oil puddle in garage.Car is mint and engine so clean you could eat off it.Not pressure washed for sale.Oil is dripping from skid plate under tranny and bottom of engine block is spotless.Appears to be oil not tranny fluid because of colour but I may be wrong.The only guess i'm coming up with is it is leaking from the base of some black plastic tube coming out of the tranny at an angle.About 4" long by about half inch.Red band around top.Does anyone know what this is and could it leak.