Local Toyota dealer serviced my 02 limited slip rear axle at 59K and they put the wrong fluid in it. I quickly noticed a rear end shutter and took it back. They admitted the mistake and corrected the fluid. All seems fine. I put 300 miles on the truck with the wrong fluid in the differential. They have offered to warranty the differntial for an addtional 3 years or 36 K or replace the clutches. Is their offer reasonable or should I ask for more? Thanks.