Q:

Which company makes the best fuel system cleaner?

A:

Quick Answer

Reviews may vary among individual product offerings within a brand, but Walmart reviewers rate two fuels system cleaners from Gumout highly. Amazon.com customer reviewers give fuel system cleaners from Chevron and Royal Purple high ratings.

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Full Answer

As of 2015, Walmart reviewers give Gumout All-In-One Fuel System Cleaner and Gumout Fuel Injector Cleaner 4.8 and 4.4 out of five stars. Reviews of both products report improved gas mileage and engine performance. Amazon.com reviewers give both Royal Purple 11722 Max-Clean Fuel System Cleaner and Stabilizer and Chevron 65740 Techron Concentrate Plus Fuel System Cleaner 4.5 out of five stars. Customer reviews of these products also note better gas mileage and smoother running engines.

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