What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[CMoore711]

what on earth is 88? is that some e based stuff, or just out of order mix between 87 and 89?

I honestly don't know... It's a blend that I've only seen available at various Casey's gas stations.

 

[Tonyrodz]

I honestly don't know... It's a blend that I've only seen available at various Casey's gas stations.

I've heard 88 is only available in the higher altitude states. I've never seen it offered in the northeast.

 

[dps01]

I've heard 88 is only available in the higher altitude states. I've never seen it offered in the northeast.

“Unleaded 88 is a fuel for gasoline-powered vehicles containing 15% ethanol. It gets its name from its octane rating of 88. Unleaded 88 is often referred to as E15 because of its 15% ethanol concentration.”

https://www.mnfuels.com/ethanol-blends/88-octane/

 

[Sparksalot]

I've heard 88 is only available in the higher altitude states. I've never seen it offered in the northeast.

Yep. It’s right there next to regular 85.

 

[Charlie207]

Do the math on your fillups, it might be cheaper to use 87 then a bottle of additive to get the octane number where you want it.

I've never used black magic in a bottle. What are some quality additives?

 

[j91z28d1]

“Unleaded 88 is a fuel for gasoline-powered vehicles containing 15% ethanol. It gets its name from its octane rating of 88. Unleaded 88 is often referred to as E15 because of its 15% ethanol concentration.”

https://www.mnfuels.com/ethanol-blends/88-octane/

ahh so it's 87 with 5% more e in it. weird.

 

[Grady_Wilson]

I've heard 88 is only available in the higher altitude states. I've never seen it offered in the northeast.

You can get 88 here in WY.
I live at about 5,000 feet elevation.
Many stations even offer 85, which I have never seen at stations in lower altitudes.

But, 88 is still too low an octane level to use in my Yukon with the 6.2.

 

[George B]

We have 88 here in WI as well. Good bang for the buck. No real mileage hit and a touch better running.

 

[Fubar0715]

got my adjustable head rest in.

View attachment 439350


@mikez71 did you get yours installed?

What did you replace these with? Standard (non-adjust) black leather headrest?

 

[j91z28d1]

What did you replace these with? Standard (non-adjust) black leather headrest?

I went from stock 2011 non adjustable to adjustable from earlier years. like 07-08

yeah normal yukon denali black leather.

I think this one said Escalade on the listing. the leather texture is a touch different. but I also haven't cleaned it and added any conditioner yet.