Mixture antifreeze or not??

[fixkick]

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Thanks for the input. Just curious people talk about the tab!

what is a TAB ! ?

I mean tap water!
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Tap + AF (50% you mix)
or AF in the jug premixed by maker of jug at 50%

your call
water ONLY TAP or any, even holy water ) is no good from 1926 up,  back then radiators where huge just for water only cooling,
that is  fact.
in fact car makers were then allowed to use smaller radiators due to the NEW better coolant that in fact, has better heat CONDUCTION 2x better.
see?
the engine must not overheat pulling a trailer, up a huge hill,  on a 125F day.  (that is one more fact)
the more you work an  engine (using full power) the more heat it expells to the coolant)  At idle , you can run beer at coolant.  parked.