No I guess you don't need a new viscous clutch, however it is robbing you of both horsepower and therefore fuel mileage because of it constantly being engaged. PM Dan Erickson and ask him what aftermarket viscous clutches he used on his 99 D2. Don't know if the part number will cross, but he found a couple of viscous clutches one that is near stock and one that is more aggressive and locks up much earlier, and I am pretty sure they were much, much cheaper than oem. Like I said though I am not sure if the parts#'s will cross referance, but they might have something for the RRC.
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