I used that stuff back in the day to try to quiet noisy lifters in my 68 Pontiac's 350 V8. It didn't seem to help, but it didn't seem to hurt (although the tapping of the lifters eventually drove me so crazy that I put a big cam and new lifters in, which enhanced my driving experience...so maybe the stuff DID help!).
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Rain, snow, sleet, hail: 2009 Mazda 3 sGT HB
Everything else: 2009 370z, PW Touring 6MT
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