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Old 07-30-2020, 02:35 PM
Rincon Rincon is offline
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Join Date: Aug 2019
Posts: 37
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In 35 years of this business I have never heard of the term octane creep. Never. If you get some sort of build up on pistons it does not usually increase compression ratio enough to require higher octane fuel. Never heard of that either. Carbon build up if begins to glow red hot can cause detonation and pre ignition. But increasing the octane rating won't make pre ignition go away. Adding oil to fuel will itself cause detonation and will cause a build up of carbon that will also cause detonation and pre ignition. Marvel mystery oil being the worst offender. It's waste motor oil, transmission fluid and unrecyclable cooking oil. Octane creep? Never heard of the term.