98 Mustang Coolent Issue! Help!

[greg9034]

I just recently purchased a 98 Mustang v6. I decided to change the coolent because the car has 70k on it and it looked dark. I drained everything out, and cleaned out the fill tank. I then added new coolent to the fill tand up to the Fill hot line as my haynes book states. I drove the Mustang a couple miles down the road and noticed the coolent gauge is running all the way hot. I wondering what I could have done wrong to cause this. Please Help! I need to drive my car.

Thanks
Greg

[motorjock205]

well, if the fill tank was the only thing you put back in, and didn't get the radiator full, yeah, it's gonna run hot...