Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - MPG Decline from Colder Weather or Winter Blend Gas or ???

cfg83 · 11-23-2009, 03:49 PM

Hello -

Thanks for the tips. I think the weather has definitely been an important component. I went here ... :

California Data Exchange Center - Query Tools

... And looked for weather data for the same time period 2008 vs 2009. It was difficult because there are a lot of weather stations, but there is also a lot of missing data for this time period. I eventually had to settle for San Rafael Hills, which is North of downtown Los Angeles.

CSV Data Retriever: SAN RAFAEL HILLS (LOS ANGELES R)

I used the "TEMPERATURE, AIR AVERAGE (deg f)" data to build this graph (from August 1 to November 22, 2008/2009):

The keys are the thick flat monthly averages. October 2009 was about 7+ degrees colder than October 2008. This implies to me what I was hoping for. My October/November 2009 has been much colder on average than the same period in 2008.

This makes me happy because, hopefully, the emission-cleanup mods I have been doing were not the culprit.

CarloSW2

11-23-2009, 03:49 PM	#7 (permalink)
cfg83 Pokémoderator Join Date: Dec 2007 Location: Southern California Posts: 5,864 1999 Saturn SW2 - '99 Saturn SW2 Wagon Team Saturn 90 day: 40.49 mpg (US) Thanks: 439 Thanked 532 Times in 358 Posts	Hello - Thanks for the tips. I think the weather has definitely been an important component. I went here ... : California Data Exchange Center - Query Tools ... And looked for weather data for the same time period 2008 vs 2009. It was difficult because there are a lot of weather stations, but there is also a lot of missing data for this time period. I eventually had to settle for San Rafael Hills, which is North of downtown Los Angeles. CSV Data Retriever: SAN RAFAEL HILLS (LOS ANGELES R) I used the "TEMPERATURE, AIR AVERAGE (deg f)" data to build this graph (from August 1 to November 22, 2008/2009): The keys are the thick flat monthly averages. October 2009 was about 7+ degrees colder than October 2008. This implies to me what I was hoping for. My October/November 2009 has been much colder on average than the same period in 2008. This makes me happy because, hopefully, the emission-cleanup mods I have been doing were not the culprit. CarloSW2 __________________ *What's your* EPA MPG? Go Here and find out!** American Solar Energy Society Last edited by cfg83; 03-12-2010 at 01:10 PM..