Hi all yup me again, I have a jp flush unit I just replaced the one that came in the boat and now this ine is leaking. So I have to remove this unit and send it in for warrenty. The unit is installed after my impeller and I think after the oil cooler but before it goes into the engine (this is spliced into the cooling hose on the port side of the engine. I have a pvc joiner but it says it is not to be used for hot water. How hot can I expect the water to be after the oil cooler but before circulating through engine?