Our #1 Rislone pick
Top-ranked Fuel Injector Cleaner in our Rislone lineup, scored independently on effectiveness, health, and environmental impact. No paid placements.
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Rislone has manufactured automotive chemical additives from Holly, Michigan since 1921. The brand is best known for its Hy-per Fuel line of fuel system treatments and its engine oil stop-leak and stop-smoke products. Rislone products are sold nationally through auto parts retailers and are EPA registered. The brand markets heavily to the DIY owner and fleet maintenance segment.
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As an Amazon Associate I earn from qualifying purchases. Full disclosure
See where Rislone lands in our ranked buying guides.