100%
STP Gas Treatment Fuel Additive and Antifreeze 5.25 oz 2-Pack
by STP— Made in Multiple US facilities
Verified American Made
American Score
78% — Brand-verified
Why not 100%? Limited public documentation of specific factory location
Manufactured in Multiple US facilities
Manufacturing in USA since 1954Verified through 2 independent sources
- Brand website
- Product listing
Evidence Breakdown
Factory: Unspecified
Website claim: Yes
History: 20+ years
Overseas lines: None known
STP Gas Treatment cleans fuel system. Helps prevent fuel-line freeze. 2-pack. Made in USA.
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STP Gas Treatment Fuel Additive and Antifreeze 5.25 oz 2-Pack
78% American Score