[woodsman]

I've always heard that heat is the worst thing for a auto trans and considering the expense of rebuilding your tip I'd try to keep things working as Porsche wanted. You may be able to diagnos/repair it with an epoxy or maybe it's leaking at one of the hose connections. See if you can find the source before disassembling it. Sometimes just adjusting the hose clamps can stop it. Also, these cars are very sensitive to air pockets in the cooling system. I'd suggest you read all you can about coolant flushing etc. By the way, your English is excellent. I also enjoyed one of you scooter rides! High risk compared to where I live.