Thread: Stp?
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Old 07-18-2020, 03:05 AM   #6
BigRandy
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Join Date: Jun 2017
Location: San Antonio, Texas
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Re: Stp?

I used it in the late 70's because I wanted to believe the hype. Never could tell that it made a bit of difference and would rate it about a notch above mashed banana peels. Still not sure what it actually does other than raise the viscosity, but here's a link to a guy who tests all sorts of products in his garage. He did an old Vs new STP test about a week ago. Wouldn't want it anywhere near a motor in cold weather.

https://www.youtube.com/watch?v=mqiUFklL_XI
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Last edited by BigRandy; 07-19-2020 at 01:51 AM.
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