My perception on real gas
As an engineer, I hate "feelings" not supported by hard data. 1/4 tank left, went with premium. With tank down to 1/4 again, came across a station offering 93 ethanol free and filled it up again. ...
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I hadn't planned to buy the premium, and then pure gas premium. The pure gas premium came at only a slight increase in price, which is why I jumped at it. 3rd tank was also pure gas.
Made no provisions for measuring MPG.
WRT Turbo on my F150, I would see turbo spooling up to 3/4 range on long uphill climbs. It never got above 1/2 on the premium. Also while deep into the turbo, I perceived more drive train NVH on regular ethanol vs premium pure gas.
Was it financially worth it, probably not. Would I do it again given the same price differential, absolutely. It would probably be a year before I'd have the same opportunity to test, but the problem would be not the same route. I do have an OBDII monitor + Torque on my smart phone, so I could set up some screens and data monitoring. Did not have the OBDII with me on this trip.
Made no provisions for measuring MPG.
WRT Turbo on my F150, I would see turbo spooling up to 3/4 range on long uphill climbs. It never got above 1/2 on the premium. Also while deep into the turbo, I perceived more drive train NVH on regular ethanol vs premium pure gas.
Was it financially worth it, probably not. Would I do it again given the same price differential, absolutely. It would probably be a year before I'd have the same opportunity to test, but the problem would be not the same route. I do have an OBDII monitor + Torque on my smart phone, so I could set up some screens and data monitoring. Did not have the OBDII with me on this trip.
