New guy from No. Illinois

[Marky Dissod]

The correct term is either Yukahoscalaban, or Escyuburbscalahoe, still not sure.

I currently run a 2008 6.2L Denali and I can tell you it loves a 25 - 30% blend of E85 and 87. You will get less MpG, but on par with normal 87 octane.
Way less per fill up, channels the internal animal of the engine, and smells good. I can't justify premium to get just 1 more MpG.
I'll enjoy the power, cleaner engine, and similar economy.

I'd do 25% E85 in the summer, but 33% E85 in the winter.
Summer E85 is E80-something, but winter E85 is E50-something.

A friggin truck that'll run with most any factory stock 60's musclecar.
But, no. I have several cars I get my kicks with and the Yukon is strictly for DD so I'll leave it alone.

I suppose I could get why you'd want to avoid tuning the L92 (actually, I don't, but to each their own, as you do, and all that)
but tuning the 6L80E will help it last FAR longer.

 

[OR VietVet]

Welcome to the forum from Oregon.

 

[B-train]

The correct term is either Yukahoscalaban, or Escyuburbscalahoe, still not sure.I'd do 25% E85 in the summer, but 33% E85 in the winter.
Summer E85 is E80-something, but winter E85 is E50-something.
I suppose I could get why you'd want to avoid tuning the L92 (actually, I don't, but to each their own, as you do, and all that)
but tuning the 6L80E will help it last FAR longer.

Good to know about the ethanol values. I was actually thinking similar blends to try and counteract the crappy winter blend fuels that lower performance and mpg

 

[Hobert]

Welcome from Chicago Western Suburbs. When I'm up near the border at the Wonder Lake house I cross the border to Genoa City WI and smuggle in some good gas with no ethanol.

 

[randeez]

welcome!

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

I'm sure that you will love that 07. I know that I do.

 

[Hoesgottaeat2]

Welcome from NY.

 

[Marky Dissod]

Hmmm ...
How much E50 (winter E85, is E50) do I add to 87 octane fuel to achieve 91 octane?

 

[Fless]

Hmmm ...
How much E50 (winter E85, is E50) do I add to 87 octane fuel to achieve 91 octane?

@swathdiver has calculations, I think.

 

[swathdiver]

Hmmm ...
How much E50 (winter E85, is E50) do I add to 87 octane fuel to achieve 91 octane?

@swathdiver has calculations, I think.

About 17-18 gallons of E50. At full strength (50% ethanol content), E50 is akin to 93.5 octane.

Hey Rick, how about some pics of your Pontiacs?