This Just In... All 2008's must run PREMIUM!

[BigBlue]

You read it right... As I'm leaving service today, my tech pulls me aside and says, "We got a TSB last week, all 2008's need to run premium fuel."



I call the Sales Manager, and give him my WTF speech. He confirms that the same bulletin came to him, and tells me "it sure ain't gonna HELP sales". No kidding buddy! What about those of us who just found out after the sale? What does this do to public opinion? What about resale?

Anyone else heard this?

[Fastest H-Town Realtor]

Originally Posted by BigBlue

You read it right... <SNIP> What does this do to public opinion? What about resale? Anyone else heard this?

Huh? Public opinion? Resale? Your joking, right? Might as well throw the "cost of filling up" in there for good measure.


IMHO, anything rolling 400 HP should be fed a diet of hi-test ('member that word? ). Unless it is a diesel.

[TXSUT]

What I want to know is the reason they are saying it's required.

[3Hummer]

i was almost positive that the H2 recommended premium to begin with?

[CO Hummer]

Originally Posted by 3Hummer

i was almost positive that the H2 recommended premium to begin with?

What? 87 Octane was always recommended from the beginning.

At high altitude, you use even lower octane.

[CO Hummer]

Originally Posted by Fastest H-Town Realtor

a diet of hi-test ('member that word?

Hahaha!! I remember it well. I haven't heard anyone but my Dad use that word in 20 years. He still uses it BTW.

[DennisAJC]

Originally Posted by BigBlue

"it sure ain't gonna HELP sales". No kidding buddy! What about those of us who just found out after the sale? What does this do to public opinion? What about resale?

Anyone else heard this?

Affect sales??? What a stupid thing to say. The Hummer guzzles enough gas to begin with it won't make a dent in your pocket book. Unless you're on a tight budget. If so then you don't belong in a Hummer.

I've been using premium since 03 even though mine never required it. It just seems to run better. When I was filling up in the US with regular, it ran sluggish and my fuel pump whistled.

[mikejr]

OK just checked my manual for my 2008. Says that you should use 91 or better octane, but you can use 87 but your acceleration could be affected. It says if you notice a knocking then get the higher octane asap.

Anyone know WHY they issued this TSB?

[3Hummer]

even if you can run lower octane im sure hte car performs better on higher octane if thats whats recommended and it probably gets better mileage with the recomended to?!

[errett]

Originally Posted by DennisAJC

When I was filling up in the US with regular, it ran sluggish and my fuel pump whistled.

I envision this like a construction worker whistle from the truck to Dennis!

E

[mikejr]

I ran regular in my 06 with no troubles.

Hopefully someone on here will be able to find out why they TSB was generated. I'll have to check with my dealer.

[NewHummerGuy]

Originally Posted by errett

I envision this like a construction worker whistle from the truck to Dennis!

E

DAMN errett...........with 66 whole entire post them there is fighting words.

Good luck

You, my friend errett, are referring to the MOTORBOATIN KING of the nothern United States

[errett]

Originally Posted by NewHummerGuy

DAMN errett...........with 66 whole entire post them there is fighting words.

Good luck

You, my friend errett, are referring to the MOTORBOATIN KING of the nothern United States

Yeah, but I have been around long enough to know that you need to strike when you can to get Dennis. I may only have 66 posts, but I have read a ton.

He opened the door, I just helped him close it.

E

[DennisAJC]

Originally Posted by NewHummerGuy

You, my friend errett, are referring to the MOTORBOATIN KING of the nothern United States

Starting to sound like another H2 club....

TEAM MOTORBOAT - Northern US Hummer Chapter

"We're Sons Of Bitches"

[NewHummerGuy]

TEAM MOTORBOAT - Northern US Hummer Chapter

"We're Sons Of Bitches"

[/quote]


Holy $hit. Ok no one steal this. Its mine all mine

[DennisAJC]

Originally Posted by errett

I envision this like a construction worker whistle from the truck to Dennis!

E

I get that alot too but this whistle is definitely from my H2.

[blackhawk29]

can anyone get a copy of the TSB and post it ?

[mikejr]

Originally Posted by blackhawk29

can anyone get a copy of the TSB and post it ?

[tomp]

So the 6.2 is suppose to have more horsepower, so either:

-the increase in engine size bumped the compression as they used the same chambered heads
-increased timing
-or both of the above

I bet the first one is the answer and that is an Engineering mishap if they intended on the new models to use 87 octane. Every mechanical engineer knows when you increase bore size that you must also increase chamber size in the heads or compression goes up. Tis bump in compression also provides more performance at the cost of having to use higher octane fuel.

Let's see, they also added electric cooling fans which gave them about 15-18 more ponies. It's not hard to see where the extra power came from...

Hmmmm, I dont know about you guys - but as much as we have to put fuel in these things that extra $7.50 per tank sure will add up. This just made my decision not to buy a new one until the diesel comes out and to keep updating mine until then.

I bet that electric fan setup wouldn't be hard to retrofit on previous models

[imwoblin]

My 07 Escalade "recommends" the use of premium unleaded (owners manual). Since the H2 uses the same 6.2 as the Caddy, it would make sense to recommend premium unleaded.