Amazon currently has Chevron Techron Concenrate Plus Fuel System Cleaner (20oz bottle) for only $6.99 with free super saver shipping (or ships free with Prime).
I’ve used this stuff periodically… on my one vehicle I believe it makes a small difference… but I’d go by the 4.5* rating of over 1,000 reviews as testimony that it can help (of course, YMMV — but at least it’s at a low price right now)
https://www.amazon.com/Chevron-Te…00092893E/
Same price at Advanced Auto Parts – https://shop.advanceaut
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