During my first drivers school I noticed that my tranny was leaking some major oil. After some inspection I noticed that the drivers side axel seal was leaking......again. When I bought the car a few months ago the same thing occured, leaky axel seal. I replaced the seal and while sitting in the garage (approx. 4-5 months) not a leak, until the drivers school. My questions in could it be a worn/defective axel that is making the seal leak or is that seal tricky to replace properly?