Chevrolet: 01 chevy lumina, chevy lumina, stop leak

Question
my lumina does not have any white on the dipstick, and the leak as far as i know is coming from the left passenger side near the tire and it is a little oily. also i dont know what it is but some times it is difficult to get the car in gear. also the steering locks up on me and is very difficult to turn. Could you help me in figuring out this problem. much appreciated

Answer
I would check the heater hoses good, you might have a leak, I would get a can of ( BARRS STOP LEAK )its  sold  at most all car parts or K-Mart , etc. try it as if the leak is a small one it might just do the trick.  Can you tell ME a bit more about the steering ,also the locking up.   as I get so many request I can not remember all of them  ok