Hasn't arrived.
Oh man. If we eliminate them then I won't have a on hand spare for the bottom zinc. That's kinda how I use them. I also see very minimal wear on the heat exchanger zinc. All the water drains out of it after the engine is shut down. Now that bottom zinc on the aftercooler - now he is a workhorse. Although I have now started freshwater flushing when I won't be going out for a while. Will see if that lengthens their life.. Anecdotally, did you see the thread here about the 10 year old freshwater boat with the original zincs with concerns they weren't worn enough? Silly freshwater boaters.
Poor man's approach. Simply bought a 3" PVC screw on end cap from the plumbing department and screwed a hose fitting into the square "box" on the end of it. When I flush I unscrew strainer top and screw this on in its place. Screw on the hose and turn the water on with the seacock OPEN (it stays open for the flushing). Water runs through the strainer back out the seacock into the ocean. Start the engine and run it for a few minutes. Mostly fresh hose water gets pumped in but probably a hint of the salty seawater gets through as well. Probably a 90% solution or so. Turn off engine, turn off hose, then return normal strainer lid to its rightful spot. It takes me a little while this way but I'm retired so I got the time. Too lazy to hook up a permanent solution with metal strainer caps/overthecounter flush adapters and extension hoses into the trunk and all. Got more important things on the never ending list.
