My rad has had crack in the tank since I got it only leaked when I shut it down left it all summer just kept putting water every few days. got flushed good, just clean water now.

bought new rad for install this weekend may do a chem flush this weekend as well, although looking at the water I don't think it needs it.

Should I go green or pink?

How much should I put in for mix?

any thoughts would help
Thanx