Nope. Nice thought, but those "mechanic-in-a-can" chemicals might work on occasion for slow seepage, but not for large leaks. Those small leaks are often reduced with chemicals that soften gaskets and seals, but those are some of the same additives found in motor oil and transmission fluid. Larger leaks are caused by a cracked or broken seal or gasket. If a chemical you could add could plug a leak that big, it would also plug the tiny passages that carry that fluid to the valves that do the work.
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Wednesday, May 10th, 2017 AT 10:12 PM