I have heard numerous complaints about Shell V-Power (my guess is just too much detergent). I had a friend put a tankful in his car (Chrysler Conquest) and it ran horribly under boost. Bucking and sputtering like crazy. It was so bad we drained the tank, went and filled it back up with BP Premium and the car ran fine.

I personally always use BP and have never had a single problem with it. I also have the BP Chase credit card which gives me lots of free gas

 

This is very interesting. Any fuel that contains more than about 1% water will cause the ethanol/water mix to fall out of the gasoline mix. Ethanol will take up the water (and thus makes for a good gas line antifreeze in winter) but too much water will cause a layering affect where the ETOH/H20 will sit at the bottom of the tank (being heavier than gas). If this happens, the fuel pump will pick this up and the engine could be burning nearly pure ethanol (not such a good thing).
The key to using this type of fuel is to minimize the chance of fuel tank condensation, which means to keep the tank from getting too low, something that most drivers will be reluctant to do.
I use 10% ethanol gas from time to time, especially in winter to act as a gasline antifreeze, but I may stop doing this as I typically let the gas tank get to near empty before filling up. A proper MeOH based gasline antifreeze additive may be the better way to go even though I've never had any problems to date with 10% gasohol.

 

In the US, we generally don't have much of a choice about using ETOH. Up to 10% is legal (and in many places also mandatory, at least some of the year).

 

If you're around any big city, it's become mandatory all year long. I'm 50 miles from DC and all of our fuel is E10 (10% ethanol). I've never gotton over 20-22 MPG out of my S2000 either.

I tend to agree also that all the fuel's pretty much the same in an area. That's why I tend to use whatever's fuel's close. I've never had a mis-fire code.

 

Does this mean that your fuel manufacturer "can" put anything up to 10% without telling the buying public that it's in there? Locally, our Mohawk gas stations state on the fuel pumps that ETOH is in the gas and give the percentages. "Regular" fuel supposedly contain no ETOH. Mid-grade contains 5% and is sold as 89 octane. "Premium" fuel is labelled as 10% ETOH and is sold as 92 octane.

"PetroCanada" actually advertise that they put ETOH in the gas as their "winter blend". They don't say how much.

 

Here it's all E10. All grades. It's for emissions

 

Bummer.

 

Pumps around here say something along the lines of "This gas may contain up to 10% ethanol." I don't know if the label is required by law, though. (The 10% ethanol certainly is.)

 

Same with CA. There is a sign on the pumps. Used to be MTBE, now it is Ethanol.

 

Here the labelling is required. Some use ethanol, some don't. It used to be just the cheap brands did it. Now, like I said, I've seen Shell do it as well but it changes by area. Here in Ohio, the fuel requirements change by county based upon air pollution violations.