Engine Leak Stop Oil
Does anybody use STP's Engine Leak Stop Oil before? Does it work? Any feedback on this product is welcome. Thanks.
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Comments
As Mr Shiftright said, it swells the seal to seal it, then it will wear a new surface on the seal and stop or slow the leak. Sounds good so far, right?
Well.......
After a bit and a bunch of oil changes, eventually the stop leak will start to come out of the seal. When it does, the seal will shrink back to its original size, now this may take a while, but it will happen. When it shrinks back to its original size, you think it will only leak as much as before, wrong.
Remember about it wearing into the seal? Once the sela shrinks back, the gap is now wider and a bigger leak.
But hell, a car with 170K on it...I'd just add oil and keep some kitty litter under the car when it's parked.