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It seems the quote was wrong - type 2 is a POAT. It was mega-flushed, and I'll count on the phosphate to work as the silicates did, as the 3 old Hondas I had had the same metal mix, ie brass radiators.

It seems the As long I I stick with distilled water the Honda should be good.

Nice. https://www.cummins.com/sites/default/files/South%20Pacific/A4_Flyer_PGXL_Vital.pdf Superior aluminium and solder protection whichprevents corrosion and erosion damage.Recommended for all diesel, petrol, LPG and natural gas engines. Compatible with all chemical-free Extended Service(ES)...

There is also BITOG posts suggesting that Honda Type 2 have sebacates "which are plasticizers" but I have not seen the concern that there is with 2EHA. There might not actually be a concern with 2-EHA (2-ethylhexyl acrylate) and butyl rubber as MSDS calls for butyl gloves. AFAIK the parts in a...

This BITOG implies Toyota and Honda are essentially same. Pink is likely not. I did seesome other papers but I Am Not A Chemist: https://apps.dtic.mil/sti/tr/pdf/ADA313580.pdf https://www.oil-club.ru/forum/applications/core/interface/file/attachment.php?id=207136...

While waiting I also saw this CLR vid I do use CLR around here a LOT due to hard water. I probably won't bother with the RV since I did flush it very well already, but might for next job. Anyone use a coolant filter with appreciable results?

I paid 16 each at O'really for 97 RAM. < pictured wipers are made from unobtanium. And, WHT can they not make them from silicone?

Well I ordered the Honda type 2 coolant, since it will arrive tomorrow and then I can forget about it for 5 years or so.

Not only obsolete, but complicated by my adding 2015 RAM aluminum tubing and trans heater.

? This style? Very different than other 413/440s, and no headers made in the pattern...

+1 https://bobistheoilguy.com/forums/threads/who-makes-honda-type-2-coolant.374935/#post-6660425 My 3 old Hondas all had brass cores and aluminum heads and tubes. I now see another quote which sounds reasonable. To that end I also see this 2-EHA free Ravenol The plethora of variants boggles.

Aluminum or brass radiators?

And I won't risk 2EHA in the old Dodge

Another reason to keep the NAPA green...

Valvoline VALVOLINE™ HEAT TRANSFER FLUID PG has real info. Their info page doesn't mention brass/solder though.

https://www.finishlineusa.com/products/bicycle-greases/extreme-fluoro-grease is Krytox and more reasonable price. I'd think more about viscosity though - Triflow might be better.

And they don't answer the phone... However I did find a well done Extended Life CorGuard (blue) test 2012 Ford Fusion fleet with "brass" analysis, but no mention of lead. 2012 has Al radiators.

A little crust might help keep the 53 yo radiator sealed.

Cool Gard II has Sodium Tetraborate Pentahydrate Inhibitor (20 Mule Team Borax) as per https://bobistheoilguy.com/forums/threads/john-deere-cool-gard-ii.120804 The NAPA Conventional Green https://media.napaonline.com/is/content/GenuinePartsCompany/889651pdf does not list it - does it not have...

Something else to worry about... ALL gaskets in it are 1971 original or OEM replacements. I think I'm leaning toward using the NAPA green and getting a sacrificial anode cap.