Hi all, hope I am right here. The heater valve seal at my thermostatic heater valve leaked badly. Today the replacement seal was in my inbox. I have thoroughly cleaned all parts and will tomorrow straighten the base plate. Before I throw everything together I'd like to grease all moving parts. But I am not sure if I should put some grease to the seal itself to protect it from potentially aggressive components in the coolant. Any suggestions will be highly appreciated.