MARX

I was just tol that I have a leak in my rad. Last month I had a new water pump put on. Has anyone ever put in any stop leak stuff in? The dealer said he can not find the leak but when he put it under presure it leaked out on the bottom. Money is tight and I am going to need to replace the RR axel, and the charcoal canister too. I'm looking at over 1000.00 and most of that is the rad. at 440.00 installed. Anybody have an opinion