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MetroMPG · 12-12-2012, 11:35 AM

Not getting up to operating temp is a big red flag for fuel economy. The engine is running rich, and the transmission is probably holding lower gears to get the engine up to temp. If you have somewhere to plug in your block heater, I'd definitely put that at the top of the list (along with a gauge). You shouldn't need more than about 2 hours of pre-heat time.

12-12-2012, 11:35 AM	#13 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,472 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 55.97 mpg (US) Even Fancier Metro - '14 Mitsubishi Mirage top spec 90 day: 70.75 mpg (US) Appliance car - '14 Mitsubishi Mirage ES (base) 90 day: 72.89 mpg (US) Thanks: 4,017 Thanked 6,904 Times in 3,581 Posts	Not getting up to operating temp is a big red flag for fuel economy. The engine is running rich, and the transmission is probably holding lower gears to get the engine up to temp. If you have somewhere to plug in your block heater, I'd definitely put that at the top of the list (along with a gauge). You shouldn't need more than about 2 hours of pre-heat time. __________________ Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata Honda mods: Ecomodding my $800 Honda Fit 5-speed beater Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage. Ecodriving test: Manual vs. automatic transmission MPG showdown EcoModder has launched a forum for the efficient new Mitsubishi Mirage www.MetroMPG.com - fuel efficiency info for Geo Metro owners www.ForkenSwift.com - electric car conversion on a beer budget