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Old 12-31-2011, 12:35 PM
 
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There really aren't a lot of other brands in Metro Denver OTHER than Conoco. A lot of national brands like Chevron, Exxon/Mobil, BP/Amoco, Texaco, Total, etc don't exist here (any more).
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Old 12-31-2011, 08:53 PM
 
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I too have wondered why Conoco gas costs more and why people buy it. Generally I use the cheaper Shell or Valero (Diamond Shamrock).
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Old 01-01-2012, 11:11 PM
 
Location: The North
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Quote:
Originally Posted by tfox View Post
There really aren't a lot of other brands in Metro Denver OTHER than Conoco. A lot of national brands like Chevron, Exxon/Mobil, BP/Amoco, Texaco, Total, etc don't exist here (any more).
The gas formulas are different in Colorado as made clear by the 85/87/89 octane gas levels. Add in the aggressive behavior of the supermarkets in branding/retailing gas and its not a good investment to be here.
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Old 01-02-2012, 09:34 AM
 
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My wife gets 450+ miles to a tank using Conoco gas. For us it's worth the extra $. RP
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Old 01-02-2012, 09:44 AM
 
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What does your wife get on other brands?
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Old 01-02-2012, 09:51 AM
 
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Usually less than 400. I use 85 crap gas in the truck (one ton) and don't want to know my mileage. :-) RP
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Old 01-02-2012, 03:29 PM
 
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The main thing that will affect gas engine fuel economy, as far as the gasoline itself is concerned, is the amount of ethanol in the gasoline. Ethanol has less energy per gallon than "pure" gasoline, so the more ethanol, the worse the fuel economy. Generally, the ethanol content of gasoline is stated right on the pump. It is difficult to find gasoline in Colorado that does not have some ethanol added--ethanol is added to "oxygenate" the fuel to supposedly lower air pollution. Of course, when you have to burn more fuel to go a mile, I'm not sure how that equates to less air pollution when one considers the pollution from refining more fuel, transporting more fuel, etc. Unfortunately, the EPA morons only seem to be concerned about emissions from the tailpipe, and not all of the "upstream" emissions caused by engine emission controls that require an engine to burn more fuel to accomplish the same work.

As I have posted before, octane ratings are affected by altitude. 85 octane fuel sold in Colorado at 5,000 or more elevation IS EXACTLY THE SAME OCTANE as 87 octane fuel sold at lower elevations--it's just that altitude is a variable that is included in the octane computation.
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Old 01-02-2012, 06:43 PM
 
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Originally Posted by jazzlover View Post
The main thing that will affect gas engine fuel economy, as far as the gasoline itself is concerned, is the amount of ethanol in the gasoline. Ethanol has less energy per gallon than "pure" gasoline, so the more ethanol, the worse the fuel economy. Generally, the ethanol content of gasoline is stated right on the pump. It is difficult to find gasoline in Colorado that does not have some ethanol added--ethanol is added to "oxygenate" the fuel to supposedly lower air pollution. Of course, when you have to burn more fuel to go a mile, I'm not sure how that equates to less air pollution when one considers the pollution from refining more fuel, transporting more fuel, etc. Unfortunately, the EPA morons only seem to be concerned about emissions from the tailpipe, and not all of the "upstream" emissions caused by engine emission controls that require an engine to burn more fuel to accomplish the same work.
That's up there with having to drive 20 miles round trip for my emissions inspection every 2 years. How much pollution is created by the unnecessary trip to tell me my emissions are fine?

Quote:
Originally Posted by jazzlover View Post
As I have posted before, octane ratings are affected by altitude. 85 octane fuel sold in Colorado at 5,000 or more elevation IS EXACTLY THE SAME OCTANE as 87 octane fuel sold at lower elevations--it's just that altitude is a variable that is included in the octane computation.
That's what I thought. Thanks for clarifying. BTW, cars in Clorado get better mileage than those at sea level, at the expense of reduced engine power.
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Old 01-03-2012, 08:07 AM
 
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That's why most trucks in the high country are turbo-diesel, the turbo compensates for the lack of 02 and you don't lose the 20% of your power over 7,500ft normally aspirated engines do. RP
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