Satisfied with STP Oil Treatment

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Originally Posted by Donald
STP = Studebaker Testing Products


No: Scientifically Treated Petroleum. Around for years before Studebaker, in an attempt to diversify away from automobile production, purchased it.
 
Originally Posted by Malo83
Good stuff, used it in some of my beater cars, took forever to drain the bottle
lol.gif


Why the micro wave was invented. A few zaps and.......
 
I use a bottle of the silver bottle STP synthetic with stop leak in my '66 Cadillac just for the added ZDDP boost. I don't see STP having any benefit in a new modern engine.
 
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