Re: plug reading when running alcohol

Andrew Laforest /
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This can be applied to all fuels, great useful info. Thanks for sharing. As far as cars go E85 has proven itself to be less efficient than dino juice in both latent energy (more fuel for same output) and curbing emissions. Only benefit (assuming natural aspiration) is higher octane/ slower burn rate allowing higher CRs and more advanced timing. Adding toluene or xeylene in the 10-20% range to premium gas will push ROM over 100 while returning better mileage vs e85. Unless you live in the corn belt, better options are out there in my opinion.

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