Our 1992 4X4 2500 has a leaky seal on the transfer output shaft (according to the dealer). We're currently in Seattle but are headingback to Detroit (where I can get the work done cheaper) pulling a small 5th wheel trailer. It's a very slow leak, maybe 2 or 3 drops in 24 hours. My question is will it hold until we can get back to Detroit or should we have the work done here in expensive Seattle? Any ideas how much it should cost to get the work done? Thanks for any advise you can provide!