Looks like to be safe I will use non ethanol fuels available in Canada like Shell V power (see thread below).


A big problem perhaps some of you thought about:


When I buy V power, for example, almost all service stations use a single pump dispenser where fuel grade is selected at the pump. I select V power for example, but, in many cases, the person before me selected 87 low grade. So the pump line is charged with 87 gas. I imagine it takes several gallons (many litres) before the V power fuel pushes out the 87 fuel in the line between the dispenser and the pump into my tank before the V power fuel begins to flow into my tank. Even if the length of line charged with 87 gas is say 10 feet long, that still dilutes the quality of the high octane gas. Do you know what I mean?


So I use the pump where I can see that the last person to have bought fuel selected V power, so I don't have to settle for purging lower grade fuel into my tank.


I like to keep my tank less than a third full; the car is more responsive, so fuel quality is important in this regard.


Am I crazy for being a purest? Or are there others out there?

 

The blending is done in the pump stand. The cross contamination is limited to whatever is in the hose... less than a pint. If you notice, when the pump is off and you squeeze the handle trigger, very little fuel comes out.

 

If you've gotten the message from the other thread that E10 fuels will somehow damage your car, I don't think there's any words that will reassure you about a bit of 87 octane being mixed with the 91.

Not trying to be sarcastic or rude but I think nasty myths and misconceptions have thrown a scare into you. Putting the science aside which will easily prove there's no issue, people have been using E10 in their cars instead of pure gas for decades. There's no reported problems. Similarly, people have been filling their cars from multi grade pumps for decades without issue.

If you really don't want to sleep for a week, there's many drivers who knowingly use 87 octane instead of 91 in their Jags or other high end cars- again without issue.

 

I had a 2012 C63 coupe; accidently used 87...very bad knocking...

 

+1 Things are getting more than a little wacky on this subject, science and voluminous data to the contrary be damned.

 

That's true, but is there not a back flow valve between the nozzle and the pumps at the top of the line where it arches next to the dispenser? behind that valve is a full charge of fuel, so when you trigger the nozzle when the pump is on, notice you don't have to wait for fuel to flow; it seems as though the line is charged and ready to go......

 

The knock sensor is there for a reason. Let it do its job. Stop living in fear.

 

not fear per se, but a drive for excellence (pardon the pun) in the experience of the full potential of the machine. Hence why I went from V8S convertible (good) to R convertible (better) to R coupe (hopefully even better)... maybe one day an SVR

 

For your F-type, ethanol is mostly a concern if you store the car. If you go through a tank every 2-3 month, then you are fine. If not, then you need to make sure fuel stabilizer is added.

Ethanol will eventually damage your car, but outside of storage scenario it will take at least a decade for this damage to show up. Unless E10 fuel was stored, like for example in a rural area gas station where 91 Octane fuel doesn't move much, and you happen to get more ethanol than expected. If that keep happening regularly, you will have issues...

 

Can't comprehend the concern....you go through cars faster than some go through a tank of gas....and one third of a tank for better response ? are you trolling ?

 

Both of these threads are ****ing insane. What this guys said too ^^

 

Speaking of trolls........

Here's the inside of my old Corvette's gas tank. It's had nothing but E10 since the mid 90s (20 years) and is stored for 6 months of the year over our Canadian winters in an unheated garage. The gas you're seeing was 2 years old at the time.

There is no corrosion. There is no water............

 

If you're storing it, surely the problem is going to be evaporation? Obviously, in a typical Canadian winter there won't be much chance of that, but...

 

No, cars since the very early '70s have EVAP systems to prevent gas tank vapours from escaping. Even prior to that with 'open' systems, the gas tank vent was the size of a pinhole.

People keep talking about garden tools, small engines, boats etc. and the problems experienced with those. Gasoline, either E10 or 'pure' will evaporate in their tiny carbs and fuel lines and cause problems. The solution is easy- run them dry prior to storage.

 

... and store them in "bracing" temperatures.

 

Listen Mikey, you are welcome to treat your 2003 S-type any way you want. You are also welcome to ignore scientific papers, conference presentations, research by automotive association that I have linked... because your old Corvette didn't suffer any issues. Act as reckless as you want to, your cars your money.

You are not welcome disrespecting me by calling me a troll over factual disagreements.

 

There's no evaporation from sealed containers, no matter the temperature. Most people don't understand that the fuel system on a modern car is essentially a sealed containers. That's why there's no smell of raw fuel in garages.

 

Lucky you, it could have easily looked like these gas pumps:

Accelerated Corrosion of UST Equipment

 

In this case sealed container does not mean vacuum sealed. In the gas tank and vapor recirculation system you have quite a bit of air. This air contains humidity, which is water. This is how water usually gets in and this is why you supposed to store cars with a full gas tank.

 

dupe, please ignore.