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by p_l
1389 days ago
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It's not just engine evolution, but TEL was replaced by non-lead additives, not removed. And the fuel mix impacts values critical for aviation but mostly irrelevant to cars, like fuel vaporisation for given temperature/pressure (this is AFAIK major issue with ethanol added to fuel and source of limits on use of MOGAS in aircraft) as well as impact in performance which are pretty much impossible to notice for a car (except maybe if you have engine with sparkplugs designed for leaded fuel) but matter of life and death in airplane. |
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