seems to be working just fine. nothin blown up yet, nothing seized up either... id say it works.... i just havent invested the money in doin a compression test and the such, however, it feels a lot different.
i saw a commercial and naturally thought it was poppycock, but people say it works. It even says it can unseize an engine. hmmm my friend has a grand am that only runs off of one piston... i should buy it and try it.
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