I'm an employee there and Lisa above is correct, first we need to know where your leak is. We have numerous additives with stop leak in them. The best way though to stop it is to replace the gaskets or seals that are causing your problem.
Could be oil cooler gone out
Great service people up there that nose what they are doing. What kind of leak. If head gasket yes. But sometimes it better to fix it because it's a tim fix. Oil leak you half to fix it with gaskets. And also seal it to so it probably won't leak again
You should probably call the store directly and ask your question; they'll need to know what "type" of leak you have (i.e.- oil, transmission fluid, brake fluid, etc.). The employees know a lot, so I would start w/them first.
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