has anyone experienced a decrease in mileage with Shell's new 93 oct V-power?
i'm not going to risk it though. i know it's bad to run a tank down because of sediments and what not, but i figured if i do it EVERY tank, than the collected crap will only be bad, but not horrible. whereas if i didn't, if i ever HAD to run down to E, it'd all be sludgetastic.
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