I have a used Hurth 630A that was removed during an engine change. I would like to trade it for a Hurth 450. The 630A is as removed with the cooler, but most likely original and should be replaced. The fluid is clean and does not smell bad. It is a 2:1 ratio. I would like to have a spare 450 with 2:1 ratio for my boat and hoping someone wants the same with a 630A. I'm located in Virginia. PM me if you would like some photos or more details.