What type of gas do you fill up with?

I see a lot of mention of BP, Shell, Chevron, etc... but i haven't heard anyone specifically mention experience with Exxon or Mobil gas. Is anyone exclusively using it? Any feedback? I have a mild discount on Exxon and Mobil gas and am trying to understand if there is any appreciable gain/advantage by using someone else.

Similarly, I firmly believe in Mobil 1 motor oil and have been using it in my current (non-BMW) car. Is there any issue with continuing to use this on my BMW?

Our wonderful government has just approved E-15. 15% alcohol is not approved for use in our vehicles,so be careful at the pumps.
Seems counter-intuitive to me that it has been approved.
First, the higher the ethanol content the lower the mpg.
Second, it takes more energy to produce a gallon of the stuff than the energy it yields.
JMHO

The safest thing to do is pay more and buy gas that has no ethanol. On the Gulf coast it is advertised sometimes as fuel for boat motors as the ethanol is so devastating to those motors. The added cost will be made up in part by the added fuel economy and the balance by lack of repair bills. I plan to fire my congressmen.

Originally Posted by brunke

The safest thing to do is pay more and buy gas that has no ethanol. On the Gulf coast it is advertised sometimes as fuel for boat motors as the ethanol is so devastating to those motors. The added cost will be made up in part by the added fuel economy and the balance by lack of repair bills. I plan to fire my congressmen.

Unfortunately you can't around here. E10 is mandated by law here, and I pray E15 doesn't follow suit....

Originally Posted by BobRBob

I use 91 consistently. Higher octane is very rare around here. I always use Shell V-Power as it is the only gasoline available that does not contain ethanol.

1+
In Ontario - Shell V-Power only. The only gasoline without ethanol.

Originally Posted by Anonimac

I see a lot of mention of BP, Shell, Chevron, etc... but i haven't heard anyone specifically mention experience with Exxon or Mobil gas. Is anyone exclusively using it? Any feedback? I have a mild discount on Exxon and Mobil gas and am trying to understand if there is any appreciable gain/advantage by using someone else.

Similarly, I firmly believe in Mobil 1 motor oil and have been using it in my current (non-BMW) car. Is there any issue with continuing to use this on my BMW?

Well on my eclass Benz I used to always use Mobil 93 then a new citgo opened up near me and I started going there and used their premium gas. At a service appointment my tech said the car was running like crap and where I get my gas from. He said use Mobil 93 as that's what they put in the cars.

When I was in college long time ago I had a winter car that was old and had a carburetor and always pinged unless I used Mobil 93. So I try to only use Mobil.

Sent from my SCH-I535 using Bimmer App

i was thinking of switching to Costco 91 but some members here claim that there performance took a hit and some shaking while idling. Anyone have further proof of this?

I use Costco 91 all the time here - no ethanol and with enhanced detergent additives. It's tops in my book - zero driveability issues.

Correct me if I am wrong but, federal law called the Energy Independence and Security Act (EISA) mandates 10% ethanol in motor fuels. Passed in 2007

Don't know about that but here in Iowa gas stations are required to label gas with ethanol and we can easily get non-ethanol regular and premium. I've asked Costco about their 91 grade and they confirmed that it doesn't contain ethanol.

Originally Posted by Yellow Jacket

Don't know about that but here in Iowa gas stations are required to label gas with ethanol and we can easily get non-ethanol regular and premium. I've asked Costco about their 91 grade and they confirmed that it doesn't contain ethanol.

A reason to move to Iowa--with my 535!!!

Originally Posted by alandf

A reason to move to Iowa--with my 535!!!

Yep - I find it unusual to have non-ethanol gas readily available here in Iowa, in the middle of the biggest corn producing state!

Originally Posted by alandf

Correct me if I am wrong but, federal law called the Energy Independence and Security Act (EISA) mandates 10% ethanol in motor fuels. Passed in 2007

I think that is only in the densely populated areas, not in the boondocks

Per Costco website:

Q: Why does Costco gasoline contain ethanol?

A: The federal Energy Policy Act of 2005 established the Renewable Fuels Standard, which required that a certain amount of ethanol be used in the nations' fuel supply. The Energy Independence and Security Act of 2007 increased this amount. Costco gasoline complies with this law, and if our fuel contains ethanol a pump decal will advise you of that fact.

Not a BMW issue, but two cycle engines like the ones in lawn equipment give miserable performance when operated on gasoline with ethanol.
Again all the politicians in Washington are protecting us-not

Does BMW recommend "top tier" gas stations? I remember Audi used to make a huge deal about it. They included a pamphlet in the manual book.

Obviously, doesn't matter what kind of gas you use. If the engine is prone to carbon buildup due to DI, it's going to happen no matter what. I know the N54 is having these issues. It's too early to be seeing high mileage N55s I think.

Originally Posted by kckc1016

Per Costco website:

Q: Why does Costco gasoline contain ethanol?

A: The federal Energy Policy Act of 2005 established the Renewable Fuels Standard, which required that a certain amount of ethanol be used in the nations' fuel supply. The Energy Independence and Security Act of 2007 increased this amount. Costco gasoline complies with this law, and if our fuel contains ethanol a pump decal will advise you of that fact.

That's correct. At my Costco the 91 octane pump has no sticker but the 89 does.

I have been using Exxon & Mobil 93 almost all the time & have had no problems so far
Thats from summer till winter (now)