I wouldn't recommend using this product for oil leaks! It will unlikely fix your leak and may lead to other problems. It's always best to fix the problem instead of trying to cover it up. If you must, remove the black cap on top of the engine, in the middle, and pour it in there.
Oil leaks are common on the turbo return line, if you have a turbo vehicle. This repair is fairly inexpensive, but it can cause a big oil leak!