2019 5.0 flex fuel issue

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04-24-2024, 11:51 AM

#11

russell072009

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Quote:

Originally Posted by whodeycincybengals

I also only use 93. The third Gen coyote has a high compression than the previous versions. High compression engines need high octane. Since I switched never have any knocks and great performance

My father has a 2020 with the same engine and he runs 87 without any issues year round.

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04-24-2024, 01:14 PM

#12

dougg

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they run fine on regular. before fuel injection and computers 12 to 1 compression would self destruct on regular. The computer injects fuel into the cylinder after top dead center and prevents pre-ignition.

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