Yeah, I`m glad I checked antifreeze wellness in the N!
Temps got down to the high 20s here this week, so I thought I`d check effectiveness of the coolant on my vehicles;;;
As I pulled the sample into the checker on "Shifty th` 50" I saw it was more brown than green ;)
It did read to be good to -10 though...
BUT I drained it anyhow, I don`t like swirling rust through that 70 years old waterpump...
I got new coolant to put back in,