Antifreeze

Your antifreeze looks good?
And tests good?
I don’t give a shit. ….
Additives in it that protects these modern engines wears out so change it every five years.
But if you trade cars often I guess you don’t have to give a shit.
I don’t buy the 50/50 stuff, cheaper to buy it full strength and dilute it myself.
Have a blessed fucking day.