Emily,
   Welcome to the list! If your 2002 Eurovan is still under warranty, a Winnebago dealer should be able to diagnose your leak and repair it. I've found the ev-update list very helpful in learning about my Eurovan camper. They're great vehicles! That list is targeted specifically at Eurovans. You can find it and join by going to the Yahoo group site and searching on Eurovan.
Marve
'95 Eurobago (For Sale)