Gas Type?

[jmsspratlin]

Just curious as to what type of fuel you guys are running in your Hummers? By type, I am referring to 87,89, or 93 octane. I know alot of people swear that 93 is the only thing to run in such a lux vehicle, while others see no problem with 87 and an occassional dose octane injector cleaner. Just wondering the census on here. Thanks....Jamie

[Mr_Pat]

Originally Posted by jmsspratlin

Just curious as to what type of fuel you guys are running in your Hummers? By type, I am referring to 87,89, or 93 octane. I know alot of people swear that 93 is the only thing to run in such a lux vehicle, while others see no problem with 87 and an occassional dose octane injector cleaner. Just wondering the census on here. Thanks....Jamie

I live in WY and here regular is 85 octane and thats what I use. I think its because we are 6000 feet above sea level.

[cl998]

I run 87 octane, I havent notiuced much of a difference with 93 or 94. Sometimes I run fuel injector cleaner, maybe every 6 months.

[jmsspratlin]

Thats very nice to hear. My car is slated to only run 93 and above octane (needless to say I don't drive it much), however I was unsure what was normal to run in the Hummer. I have been running 89 since I bought it and adding a bottle of cleaner once a month (actually 2 bottles since 1 bottle treats 21 gallons) With the price of gas on the rise, I may down-grade to 87. Thanks for the responses...Jamie

[It\'s a Dry Heat]

I would only use name brand stations, no discount gas. I use 87 oct and have done a test of 93 oct. I actually got less mpg. In my 04 H2 I get 12.1 around town. Never taken it out of town. Off roading is close to me in Arizona. Miles on my truck is 13.5k. My truck is in link.

Vern

[jmsspratlin]

Originally Posted by It\'s a Dry Heat

I would only use name brand stations, no discount gas. I use 87 oct and have done a test of 93 oct. I actually got less mpg. In my 04 H2 I get 12.1 around town. Never taken it out of town. Off roading is close to me in Arizona. Miles on my truck is 13.5k. My truck is in link.

Vern

Damn, you must not drive that thing much. An 04 with only 13K on it? WoW.

[ttkresurfacing]

Believe it says in the owners manual that it set up for 87 octane.

Tim

[Ernie Italy]

Here in Italy gasoline have 95 (min) octane until 105.
I use GPL or LPG Liquid Petroleum Gas and have 114 octane.
No problem ....

[frenzy1]

^^^Same here in Belgium

[f5fstop]

Originally Posted by Ernie Italy

Here in Italy gasoline have 95 (min) octane until 105.
I use GPL or LPG Liquid Petroleum Gas and have 114 octane.
No problem ....

The US uses research octane number (RON) x motors octane number (MON)/ 2 for their average on octane. Europe and most of the world uses RON number only, thus it appears as a higher octane, but in effect, it is the same octane level we use (+/- 1 or 2 points).

Best fuel to use is what the manufacturer recommends, in this case regular. Using other grades will only cost you money and make the oil companies profits go higher. My recommendation, if possible, use a Top-Tier Supplier:

Top Tier Detergent Gasoline

TOP TIER Detergent Gasoline is the premier standard for gasoline performance. Six of the world's top automakers, BMW, General Motors, Honda, Toyota, Volkswagen and Audi recognize that the current EPA minimum detergent requirements do not go far enough to ensure optimal engine performance.

Since the minimum additive performance standards were first established by EPA in 1995, most gasoline marketers have actually reduced the concentration level of detergent additive in their gasoline by up to 50%. As a result, the ability of a vehicle to maintain stringent Tier 2 emission standards have been hampered, leading to engine deposits which can have a big impact on in-use emissions and driver satisfaction.

These automakers have raised the bar. TOP TIER Detergent Gasoline help drivers avoid lower quality gasoline which can leave deposits on critical engine parts, which reduces engine performance. That’s something both drivers and automakers want to avoid.

TOP TIER Detergent Gasoline Retailers

Gasoline retailers must meet the high TOP TIER standards with all grades of gasoline to be approved by the automakers as providing TOP TIER Detergent Gasoline.

In addition, all gasoline outlets carrying the brand of the approved retailer must meet the TOP TIER standards.

Additional gasoline retailers are added to the TOP TIER list as they meet the standards. The retailers known to be on the TOP TIER list are shown below.

TOP TIER Gasoline Retailers:

QuikTrip
Chevron
Conoco
Phillips
76
Shell
Entec Stations
MFA Oil Company
Kwik Trip/Kwik Star
The Somerset Refinery, Inc.
Chevron-Canada
Aloha Petroleum
Tri-Par Oil Company
Shell-Canada
Texaco
Petro-Canada
Sunoco-Canada

http://www.toptiergas.com/index.html

[MDimitri]

Originally Posted by ttkresurfacing

Believe it says in the owners manual that it set up for 87 octane.

Tim

Perfect, regular unleaded fuel is all you need!! I don't care what anyone eslse says, this is all you need. This is what GM says that is required, if you drive an asphalt prncess then you will need a octane boost and a fuel injector cleaner, such as the product offered by STP. If you drive your truck at least once a month on the highway then you will not require the cleaner...damn it's hard to type when drunk!!!!!!!!!!!! Holy crap stay aewAY FROM moonshibne...seee what I'm sayijnng... Arrgghhhhhh... I am losing typing control....HELP!!!!!!!

[HummerHippy]

87 in an H3. I have consustantly heard for years, that higher octane only helps an engine with pinging. So if you don't have that problem with lower octane, there's no benefit from using higher priced, higher octane fuel.

[Texas Red]

I've used only 87 for 65000 miles in my 2003 model, no problems. A friend has an Escalade with the same 6.0 Vortec and it clatters on 89. The H2 was tuned for 87 and that is what my 2003 manual recommends (as I recall).

running Chevron regular in my H3 (owners manual recommends regular)

[HUMTECH]

You only need 87 octane. Higher octane fuel is for use when combustion chamber pressures are higher like when you add A supercharger. Octane is not A performance additive, rather it raises the fuels resistance to burn to prevent preignition in higher compression motors. If you use low octane fuel in A higher compression motor the fuel will ignite prior to the sparkplug firing causing pre-ignition/detonation from the pressure in the cylinder. No advantage to using A high octane fuel in A low compression motor.

[mikejr]

running regular 87 in the H2, no knocking and runs like a champ.