If the pinion seal gets replaced ensure the dealer has the correct genuine Carraro pinion seal install tool. These same leaks were seen in Australia on the next sized up Carrao axle used in the SCAM built Iveco Daily 4x4. It wasn't a major problem, but people found if the seal was not installed with the correct tool and the seal not at the correct depth and square the seal would again leak a short time later. It has been reported that aftermarket viton seals were cheaper and lasted longer then genuine in the Iveco application. Check the diff breathers are not blocked or the valve is jammed. IMO these axles really need the steel pinion seal guard like most other axle manufacturers use to protect the seal.
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