sickspeedgt

i took my car to the exhaust shop a few weeks ago. They showed me where my axle was leaking, looked pretty bad, it was leaking all inside my wheels. well i've had my new saleens wheels on for about 5 days, now the axle has leaked in them, not that i didn't expect that. how much does it cost to fix a leaky axle, is it a lot of trouble to fix myself.