head gasket repair liquid

used Bar's Leaks head gasket repair in a 96 ciera (3.1L) with leaking coolant from the head and was wondering if anyone has used a similar product and how long this lasted for them?

thank you

first of all... i like the wheels on that car... pretty sweet... secondly, I've helped somebody by using that product for a leaky head... it's a temporary bandaid, and you cant expect it to last more than 4 or 5 thousand miles before your symptoms return... dont add it againwhen they do come back, you really dont want to much of that crap in your cooling passages... over-use could cause hot-spots, cylinder warpage, and ironically, more head leaks from uneven heating of the heads

thanks for your input.:pimp: