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this post was submitted on 14 Oct 2023
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United States | News & Politics
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Only sort of; the engines were designed so that the additives were important to combustion performance. Of course, the solution isn’t to keep using leaded fuel, but to rebuild the engine to be more reliable AND not depend on the additives.
Running an old engine with modern fuel will definitely cause it to fail.
It's only important for increasing octane. You would have to reduce the performance of the engine on order to prevent knocking.