[OKCamaro96]

I have a 96 Camaro that I sold about two months ago. The second week the guy had it he called me wanting his money back because the car wouldn't start. I had triple A tow it to my house and the first thing I saw was green anti-freeze all over the rad. The battary was dead, so I hooked another up to it (brand new) and it started---once--- and sounded AWFUL...the worst I have ever heard, and then the car died and the battary was DRAINED. No more starts, or turn overs. I have replaced the anti-freeze several times in my car and the first thing I learned was to use the orange and no other..What has happened to my car? What can I possibly do to repair it, if anything? Please help or suggest...Thank You