Flushing the FW side

[Strait Shooter]

I noticed over the summer that my engine (Perkins M-50) started running hotter than it had been before by about 5-10 degrees. While checking things out I felt some semi-coagulated substance in the heat exchanger as well as congealed antifreeze at a hose bib or two. While operating temperature is still within acceptable limits, it's time.

I've read everything I can find on this, but I'd still like to ask for some advice. The Plan is to remove the thermostat, flush heat exchanger and entire FW cooling system with Ridlyme (I think?). I'd like to mix some ridlyme and water into the system and then run it up to operating temps. After the engine cools again I will begin a series of distilled water flushes, I believe three as a minimum ought to get me close.

I'm also replacing some original hoses and clamps, and probably the thermostat as well.

I'll also remove the heat exchanger tubes and inspect them at this time......right? If I see any build up still, I'll take it to a radiator shop, if not, I'll clean it up and put it back.

Then a fill with the appropriate anti freeze, and distilled water at a 50/50 mix, and a run up to temp again.

I saw it mentioned in the threads of a Maine Sail method for flushing, but it isn't on his web site, and I can't find it here either. Anyone know where it is, or what the procedure was?

I appreciate any responses, thanks!


John