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Hey guys...

I was half asleep last nite and accidentally filled 1/2 my tank up with 100ron ethanol fuel instead of the usual premium 98ron stuff...i know that the ethanol in the 100ron fuels usually lean our afrs out...is the car still safe to run as my car is already tuned to run 98ron fuel?

Thanks...

Edited by limpus

It will be good. Don't worry. That is only 5% ethanol, hence minimal change to AFRs.

The 10% ethanol fuel at United makes a little difference to AFR but has higher resistance to knocking. I'm thinking about getting my car tuned on the united 98 octane..but then it would be rich on normal 98 :P and probably would have too much timing. The gtr in a hpi gained about 30kw on the 98 united..

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