The worst thing is, it had overheated before because i had a leak in the radiator, i got a new radiator and the car ran perfect for like 6 months, then the radiator fan broke like 4 days ago, and i kept driving it I already ordered the radiator fan, i hope when i change the radiator fan and change the anti-freeze it'll be ok, and when you said 50/50 did you mean 50 anti-freeze and 50 water?