Summer gas, cooler temp? - Honda Civic Forum


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Old 04-23-2013   #1  
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Summer gas, cooler temp?

I have noticed that the temp gauge on my car seems to be running a little lower for the past week or two than it has been. I think the gas stations have switched back to the summer gas blend, because last tank I saw an increase of about 3 mpg. Would the summer gas blend cause a cooler operating temperature? Just curious, it isn't much of a change
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Old 04-23-2013   #2  
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Re: Summer gas, cooler temp?

Quote:
last tank I saw an increase of about 3 mpg.
I'm not certain when fuel blends change for the season (Google it!), but I think that consistent warm weather alone can explain this.
My mileage has been slowly going back up too.

Quote:
Would the summer gas blend cause a cooler operating temperature?
Absolutely not. Completely unrelated.


================================================== =
Oh hell, here. I googled it.
Read this: http://www.epa.gov/otaq/regs/fuels/rfg/f01033.pdf
Looks like the storage terminal has to have RFG fuel by April 15, but your local station may get it a bit later than that.

http://www.api.org/policy-and-issues...e_requirements

http://www.api.org/~/media/Files/Pol...ments_Map2.pdf
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Old 04-25-2013   #3  
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Re: Summer gas, cooler temp?

Ok, JW. I could be imagining the lower temp reading. And I think it did switch gas, I went from 35 to 38 mpg from one tank to the next, with little change in weather. It's a welcome sight
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Old 04-25-2013   #4  
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Re: Summer gas, cooler temp?

hotter air coming in your intake (to a certain point) will yield better mpg.
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Old 04-26-2013   #5  
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Re: Summer gas, cooler temp?

Yeah it helps, but Ohio weather forgot about spring this year. Frost again this morning.
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Old 04-26-2013   #6  
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Re: Summer gas, cooler temp?

Even with temps in the 30s I can keep my temp gauge down by blasting the heat in the mornings. Turn down the fan speed and gauge soon pops up to normal mark.
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