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NeilBlanchard · 05-06-2009, 01:14 PM

Hi,

I don't think that is the reason for worse mileage in the cold:

Longer warm up time, so longer on rich mixture
Cold air has more drag -- ~6.8% more drag at 30F than at 60F
Bearings etc. have more friction due to cold lubricants

05-06-2009, 01:14 PM	#45 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,908 Mica Blue - '05 Scion xA RS 2.0 Team Toyota 90 day: 42.48 mpg (US) Forest - '15 Nissan Leaf S Team Nissan 90 day: 156.46 mpg (US) Number 7 - '15 VW e-Golf SEL TEAM VW AUDI Group 90 day: 155.81 mpg (US) Thanks: 3,475 Thanked 2,952 Times in 1,845 Posts	Hi, I don't think that is the reason for worse mileage in the cold: Longer warm up time, so longer on rich mixture Cold air has more drag -- ~6.8% more drag at 30F than at 60F Bearings etc. have more friction due to cold lubricants __________________ Sincerely, Neil http://neilblanchard.blogspot.com/