Does anyone run ethanol free gas in lieu of premium in their 6.2 engine

[Blueinterceptor]

Has anyone tried EF gas. I tried it in the 5.3 for the first time the other day. My highest mpg was 26 mpg Highway. My avg was 25 mpg on the highway
my non highway mpg was 18-19 mpg

 

[Stbentoak]

In FL it’s about + .80-.90 a gal here Over RUL. I hardly ever see anyone reach for that handle. I purposely by it for my outdoor power equipment and jerry cans as it stores much longer and doesn’t foul carburetors and injectors as easily….

 

[Fless]

In FL it’s about + .80-.90 a gal here Over RUL. I hardly ever see anyone reach for that handle. I purposely by it for my outdoor power equipment and jerry cans as it stores much longer and doesn’t foul carburetors and injectors as easily….

^^^ similar situation. It's about $0.30-0.40 higher here, and is available only in 87 octane (our mid-grade at this altitude). I do run it occasionally in my DD but always in the power equipment. Never in the Hoe, typically run E85 in the summer when I can get it and 91 octane in the winter.

 

[WalleyeMikeIII]

Ethanol or not, if you have the 6.2 91 min is recommended in ‘22, 93 octane in ‘21. The point of the high octane is to prevent pre-detonation, where the air fuel mix heats to the point of ignition before the optimal ignition point (when the ecu fires the spark plug). This is commonly known as “engine knock.” Whether it’s pure gas, e-10, e-15, there is a min octane rating…and it relates to the resistance to pre-detonation…do your 6.2 a favor and use the recommended octane.

 

[Micahsd]

Here in iowa it’s hard to find ethanol free gasoline that’s reasonably priced. You’d probably get 5-10% better fuel economy without 10% ethanol and with 15% ethanol up to 5% worse gas mileage compared to E10 (which I’ve kinda confirmed here lately as I’ve been doing some experimentation).

For me to make the jump to the 15% ethanol my rule of thumb is to use that if it’s 20-30 cents less than the E10 which here is usually more expansive.

Here in my area though E10 is the typical stuff. Going from E10 to no ethanol is about a 0.80-1.30 higher cost per gallon to fill up which is usually the premium grade stuff. For me I wouldn’t make up the difference by paying the higher cost per gallon.

 

[Blueinterceptor]

here in pa. Ethanol Free is rated at 89 octane and is .50 cents more than unl reg and .40 cents cheaper than premium. I had never seen it offered before. This station just opened up

 

[Fless]

Sigh. If we could only get people to drop the decimal point when they use the word "cents." Unless, of course, they mean some fraction of a cent. 40 cents = $0.40.

 

[George B]

Sigh. If we could only get people to drop the decimal point when they use the word "cents." Unless, of course, they mean some fraction of a cent. 40 cents = $0.40.

Is that your .02 cents?

 

[Fless]

Is that your .02 cents?

Of course. Penny for your thoughts....

Also reminds me of those attempting to use a shortcut for the model year. '21 turns into 21' (21 feet).

 

[firsttimetahoe]

Has anyone tried EF gas. I tried it in the 5.3 for the first time the other day. My highest mpg was 26 mpg Highway. My avg was 25 mpg on the highway
my non highway mpg was 18-19 mpg

What did you pay per gallon for it vs the price of regular gas

 

[R32driver]

In FL it’s about + .80-.90 a gal here Over RUL. I hardly ever see anyone reach for that handle. I purposely by it for my outdoor power equipment and jerry cans as it stores much longer and doesn’t foul carburetors and injectors as easily….

Same. I haven't looked lately but it's usually on par with premium if not a tad more expensive. Only people at that pump are filling gas cans for lawnmowers.

I might try a tank in the 5.3 just for ***** and giggles but in our '11 suburban the 5.3 never ever saw any difference in mileage or power regardless of fuel used. I would do a tank of 92 octane now and then and see zero change other than I paid more to fill up. But then again I never seem to get these magical mid 20's mpg out of my 5.3 that others on here claim.

 

[Micahsd]

Here’s a good article that discusses the differences on gas mileage and how ethanol may make engines run a little differently.

https://fueleconomy.gov/feg/ethanol.shtml

 

[Blueinterceptor]

What did you pay per gallon for it vs the price of regular gas

497 vs 445

 

[Plato442]

I used to run E-free in the wife’s 01 w/ 5.3. It definitely made a difference. Tried it a few times on the 03 Denali, didn’t notice much difference since I alway run premium anyhow.

 

[wjburken]

Here in Iowa, about the only way to get non-ethanol fuel is to buy premium (91 octane). Otherwise you’re getting 10% (87 octane) or 15% (88 octane) at the stations near me. At the station I use, 10% is running $3.99, 15% is $3.78, E85 is $3.75 and non-ethanol is $4.69.

 

[DenaliCountry]

I ran Non-ethy 91 in my 2019 Tahoe when I bought it new through 28K miles before trading it. I got great mileage on that truck, especially when towing (18+ with about 5K lbs behind at 75 mph). I assume the gas helped, but I mainly ran it for benefit of not running ethanol through the system as it causes everything to break down faster (fuel lines, etc). I fully expected to keep my tahoe for a long time which was why I started using it but the value on trade of that truck was $8K over what I paid for it 3 years prior so I sent it packing lol.

Right now non-ethy is about ~$5.00/gallon by me. Not sure if the cost to mileage ratio is beneficial, I imagine its probably wash between running ethy vs non-ethy. I have been considering running it again in my new truck.

 

[PatDTN]

Just by chance I just filled up a few days ago with premium ethanol free gas at a local farmers co-op. It was $4.44/gallon which is on par with regular unleaded ethanol gas around. Seat of the pants tells me my 6.2 likes it! Unfortunately I complicated the issue by installing a new ATM battery to replace my failing battery on the same trip.

 

[fr8bil]

Since discovering all the problems Ethanol creates and according to owner's manual of our 2010 Sierra Denali 6.2 I ONLY use Pure Gas in it since new. We have a Daughter who lives over in Indiana and owns a 2017 Escalade with the 6.2 and she gets away with running 87 in it somehow and either the vehicle is very heavily insulated or somehow the electronic spark control has adjusted to 87 since the last time I drove it I could not detect any pinging or knocking. One dumb issue we have in Missouri is that some ridiculous decision was made that we can only buy Pure Gas in 91 Octane and not 87. Similarly, there was some unpublicized agreement with the EPA that Ethanol-free gas is NOT AVAILABLE in a 100 radius around St. Louis Metro extending over into Southern Illinois !

 

[BG1988]

Has anyone tried EF gas. I tried it in the 5.3 for the first time the other day. My highest mpg was 26 mpg Highway. My avg was 25 mpg on the highway
my non highway mpg was 18-19 mpg

ethnonal is 3.59 yeah better then paying 6$ a gallon

$0.28 13mpg
$0.40c/mile 15mpg

 

[George B]

ethnonal is 3.59 yeah better then paying 6$ a gallon

$0.28 13mpg
$0.40c/mile 15mpg

Yeah but yours is a hybrid…
I get 9 in town on E85 vs 13 on 89