I Dont know why they do it, But Both Mine and My Buddies 1998's did puke out some Diff lube on a long trip to Montana 3 months after we both bought the trucks. I have 70k miles on the truck, and have not expirienced the Puking Diff syndrome since new. I have Changed the Diff Lube at 35k and 68k. No Problem anymore.
Doug.
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1998. 5,2500,ISB,Auto,CC,4x4,4. 10's,Suregrip,White Sport,Isspro Boost & Pyro,275hp Injectors,VA,PS Boost Module,DTT Valve Body,BD Pressure Lock,Mopar Perf Alum transmission Pan,16x8 Eagles,285/75/16 Bridgestone MT's,2. 5" Skyjacker Lift,Stockland Seibring Shell. Uniden HR2510 Ham/CB
Doug.
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1998. 5,2500,ISB,Auto,CC,4x4,4. 10's,Suregrip,White Sport,Isspro Boost & Pyro,275hp Injectors,VA,PS Boost Module,DTT Valve Body,BD Pressure Lock,Mopar Perf Alum transmission Pan,16x8 Eagles,285/75/16 Bridgestone MT's,2. 5" Skyjacker Lift,Stockland Seibring Shell. Uniden HR2510 Ham/CB