Does CA have a winter blend gas starting November?

hschen · 11-04-2009, 03:40 PM

I just refilled at Costco, Tustin, CA on November 2 and immediately saw mpg drops ever since (for 2 days). In my communting route, I can easily achieve over 60 mpg. But in the past 2 days, I have to try hard to maintain 55 mpg. I don't fill any less power. It has to be the gas. Does CA have winter blend gas starting in November every year? Or else.

Codyroo · 11-04-2009, 03:51 PM

Quote:

Originally Posted by hschen

I just refilled at Costco, Tustin, CA on November 2 and immediately saw mpg drops ever since (for 2 days). In my communting route, I can easily achieve over 60 mpg. But in the past 2 days, I have to try hard to maintain 55 mpg. I don't fill any less power. It has to be the gas. Does CA have winter blend gas starting in November every year? Or else.

In looking at my fuel mileage spreadsheet, it looks like over the last 2 years, winter blend gas came in (Bay Area) at the end of Nov/beginning of Dec.

hschen · 11-05-2009, 02:41 PM

Anyone in SoCal knows the switching date from summer blend to winter blend? I checked on the web and couldn't get a concrete answer.

11-04-2009, 03:40 PM	#1
hschen Senior Member Join Date: Aug 2009 Location: Irvine Posts: 115 My Car: 2010 Prius Model: II Package: No Package Thanks: 25 Thanked 2 Times in 2 Posts Friends: 0	Does CA have a winter blend gas starting November? I just refilled at Costco, Tustin, CA on November 2 and immediately saw mpg drops ever since (for 2 days). In my communting route, I can easily achieve over 60 mpg. But in the past 2 days, I have to try hard to maintain 55 mpg. I don't fill any less power. It has to be the gas. Does CA have winter blend gas starting in November every year? Or else.

11-05-2009, 02:41 PM	#3
hschen Senior Member Join Date: Aug 2009 Location: Irvine Posts: 115 My Car: 2010 Prius Model: II Package: No Package Thanks: 25 Thanked 2 Times in 2 Posts Friends: 0	Re: Does CA have a winter blend gas starting November? Anyone in SoCal knows the switching date from summer blend to winter blend? I checked on the web and couldn't get a concrete answer.

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