I got a Aluminun Rad for my 69 Falcon when i first got it in 2018 and it sat in the box till 2019 after I was messing around with the grill and dropped a small box end wrench and made a hole . The wife and I always would have too keep an eye on the Temp Gauge before I damaged it in the Florida Heat and Humidity . I had no choice but too install the new rad that had been sitting for over a year in the box . Now it never gets above 170 . I am in Florida …. 90’s and 100’s and feel like temps in the 110’s and it will not get above 170 !! I run a Thermo at 160 degrees and the Aluminum Rad no issues .