Winter Gas Causing Drop in MPG? - Toyota Yaris Forums

schleppy · 12-14-2009, 07:45 PM

My MPG almost always drops in winter. So far I'm seeing 2mpg less than summer.

SQUARE HEAD · 02-26-2010, 04:39 PM

Quote:

Originally Posted by schleppy

My MPG almost always drops in winter. So far I'm seeing 2mpg less than summer.

MY LITTLE MULE USED TO GET AT LEAST 40MPG BUT SINCE THE COLD WEATHER MY MPG IS NOW DOWN TO 34--35MPG...SAME DRIVING HABITS ANY SUGGESTIONS??

127.0.0.1 · 02-26-2010, 05:23 PM

Quote:

Originally Posted by SQUARE HEAD

MY LITTLE MULE USED TO GET AT LEAST 40MPG BUT SINCE THE COLD WEATHER MY MPG IS NOW DOWN TO 34--35MPG...SAME DRIVING HABITS ANY SUGGESTIONS??

wait for summer

or throw a blankie in front of the radiator

Twistoffate0817 · 03-17-2010, 07:22 PM

When does the Northeast switch over to summer gas?

docB · 03-18-2010, 08:12 PM

Quote:

Originally Posted by Twistoffate0817

When does the Northeast switch over to summer gas?

HA Ha ha

We don't have summer and winter blends any more. All the gas is cut with ethanol all year round. The alcohol just cuts your milage and raises the oil company profits. The environmental benefit just doesn't make this a good proposition. Flex fuel vehicles are as big a joke as HEVs.
doc

b_hickman11 · 03-19-2010, 12:44 AM

Quote:

Originally Posted by docB

HA Ha ha

We don't have summer and winter blends any more. All the gas is cut with ethanol all year round. The alcohol just cuts your milage and raises the oil company profits. The environmental benefit just doesn't make this a good proposition. Flex fuel vehicles are as big a joke as HEVs.
doc

Still have it here in Texas....

Yaris Hilton · 03-19-2010, 01:08 AM

Summer and winter blends aren't about ethanol vs. no ethanol. It's the boiling range of the gasoline part. In the winter they use a lot more butanes and pentanes, which give more vapor pressure for easy cold starting. In the summer the butanes and pentanes are way down, and there are more of the heavier, high boiling hydrocarbons to reduce vapor locking and evaporative emissions.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fuel Economy	swng	Fuel Economy Forum	2089	01-23-2015 07:41 PM
My progression into hypermiling	BailOut	General Yaris / Vitz Discussion	8	10-13-2009 07:31 PM
Do you get about 4 MPG less during winter ?	paraganek	Fuel Economy Forum	24	05-18-2009 10:52 AM
Anyone from Missouri? MPG problems inside	4MPG	Fuel Economy Forum	31	12-17-2008 06:48 PM
Free gas for any vehicle.	ketel0ne	General Yaris / Vitz Discussion	4	09-19-2006 09:07 AM

12-14-2009, 07:45 PM	#1
schleppy I love momentum. View User's Garage Drives: 2009 Yaris LB, Red Join Date: Feb 2009 Location: Boston, MA Posts: 587	My MPG almost always drops in winter. So far I'm seeing 2mpg less than summer.

03-17-2010, 07:22 PM	#4
Twistoffate0817 My Little Blue Egg :) Drives: '09 3 door Yaris Join Date: Dec 2008 Location: Voorhees, NJ Posts: 185	When does the Northeast switch over to summer gas?

03-19-2010, 01:08 AM	#7
Yaris Hilton Half a Bubble Off Plumb Drives: 2009 Yaris Sedan Join Date: Mar 2009 Location: Bristol, Tennessee, USA Posts: 1,593	Summer and winter blends aren't about ethanol vs. no ethanol. It's the boiling range of the gasoline part. In the winter they use a lot more butanes and pentanes, which give more vapor pressure for easy cold starting. In the summer the butanes and pentanes are way down, and there are more of the heavier, high boiling hydrocarbons to reduce vapor locking and evaporative emissions.