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the claim

Using premium gasoline in an engine designed for regular fuel causes engine misfires.

the verdict
INSUFFICIENT LEANING
Recorded sources
0 sources for · 4 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that using premium gasoline in an engine designed for regular fuel causes engine misfires?

Unclear. Several engine studies report that regular gasoline produces more knock and pre-ignition than premium gasoline, which runs opposite to the claim that premium fuel causes misfires in regular-fuel engines, but none of the retrieved items directly measures misfires from using premium gasoline in an engine designed for regular fuel.

Verdict: PARTIAL LEAN · 0 sources for, 4 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence against · 4
Experimental Investigation of Performance and Vibration Parameters of an Otto Cycle Engine Operated with Regular Gasoline, Premium Gasoline, Pure Ethanol and Mixture of Ethanol with Regular Gasoline
2024
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Santana, C. M., Santana, L. L. B., & Almeida, H. G. A. (2024). Experimental Investigation of Performance and Vibration Parameters of
                    an Otto Cycle Engine Operated with Regular Gasoline, Premium Gasoline, Pure
                    Ethanol and Mixture of Ethanol with Regular Gasoline. doi.org. https://doi.org/10.4271/2024-36-0001

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More against · 3
Research on Super-Lean Burn Spark Ignition Engine with In-Cylinder Water Injection using Gasoline Surrogate Fuels
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Research on Super-Lean Burn Spark Ignition Engine with In-Cylinder Water Injection using Gasoline Surrogate Fuels. (n.d.). cir.nii.ac.jp. https://doi.org/10.4271/2023-32-0055

Significance of RON and MON to a modern DISI engine
2017
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Significance of RON and MON to a modern DISI engine. (2017). doi.org. https://doi.org/10.1016/j.fuel.2017.07.071

Combined effects of fuel and water injection on performance and knocking characteristics of lean burn spark ignition engine
Get citation
Combined effects of fuel and water injection on performance and knocking characteristics of lean burn spark ignition engine. (n.d.). cir.nii.ac.jp. https://doi.org/10.1177/14680874261452093

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