Re: Fuel Mileage??? - Saab General Bulletin Board - Saabnet.com
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Not only have I noticed it, I've measured it. A few reasons, each one is pretty small, but most go in the direction of worse gas mileage.
Winter formula gasoline has a little less energy per gallon.
Snow tires often have more rolling resistance.
Cold-start enrichment is more severe because it's colder.
Many people idle their car to warm it up.
Denser air = more aero drag.
Snow on the road = more mechanical drag.
Cold temperatures = more power to operate shocks, wheelbearing, etc.
Denser air = more power available = more gas (unless you're unusually well-behaved).
Posts in this Thread:
- Fuel Mileage???, bever77, Tue, 22 Jan 2008 18:35:08
- ethanol or 02 booster for emissions areas, SloopJohnB, Thu, 24 Jan 2008 10:09:13
- Better in the winter........, Herb Hirsch , Wed, 23 Jan 2008 11:51:47
- Re: Fuel Mileage???, Smartin, Wed, 23 Jan 2008 09:26:02
- Absolutley normal, Noel, Wed, 23 Jan 2008 08:51:21
- Re: Fuel Mileage???, JimBlake , Tue, 22 Jan 2008 19:51:09 <-- Viewing This Message
- Do you use snow tires?, turrbo , Tue, 22 Jan 2008 18:40:27
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