Joel - you'll be good to go
the pink stuff - primarily available fro RV water systems - , drinking water, toilet systems etc
and not necessarily intended for marine engines........... will it work - of course it will,
I prefer using anti freeze intended to be used in Marine engines (and/or automotive engine applications)
Frigid guard, sierra, low tox - are propylene glycol - pet safe environmentally more friendly than ethylene glycol
oiling the cylinders through the spark plug holes is a much more labor intensive but will do the trick
no worries man the biggest dealio here is getting the WATER out b4 you add the antifreeze