I think mine did 20 mins straight at points. I will not vouch for running cool. I definitely didnt care about blowing it up that day. The stock guage didnt look happy, but I drove home just as well somehow.
Damn you guys are getting me excited. Better get back in the garage today. Damn job hunting is distracting and depressing. I ll be in on a race with you crazy bunch haha. See if I can at least trailer it this year. Reliable cooling system definitely needs thought though. Big rad, vents, oil cooler should help.