Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Parents just bought 2009 Honda Civic Hybrid... against my advice. Hmm.

RedDevil · 03-20-2015, 11:38 AM

Booh, that's cold... we've seen minus 8 at lowest this winter; had to scrape some ice even last week, but always close to 0°C.

Green Oil would make an even bigger difference at -20°C.
I measure my fuel use over the first 10 km from a cold start and saw up to 300 cc 'over target' last year at the few frosty mornings.
This year nothing below 200 cc 'over'...
I guess it takes about a third of the cold start penalty away.

I've had only one cold induced 12V start; at -14°C two years ago. It being that cold is really exceptional here.
I did not test whether AutoStop worked with ventilation OFF then - wasn't into that at the time.
Engine coolant temp needs to be 48°C or higher anyway. The blue light goes off at 51°C, so it is possible to have AutoStop while having the Cold Engine indication on - just.

03-20-2015, 11:38 AM	#39 (permalink)
RedDevil Master EcoWalker Join Date: Dec 2012 Location: Nieuwegein, the Netherlands Posts: 4,001 Red Devil - '11 Honda Insight Elegance Team Honda 90 day: 55.8 mpg (US) Thanks: 1,715 Thanked 2,249 Times in 1,457 Posts	Booh, that's cold... we've seen minus 8 at lowest this winter; had to scrape some ice even last week, but always close to 0°C. Green Oil would make an even bigger difference at -20°C. I measure my fuel use over the first 10 km from a cold start and saw up to 300 cc 'over target' last year at the few frosty mornings. This year nothing below 200 cc 'over'... I guess it takes about a third of the cold start penalty away. I've had only one cold induced 12V start; at -14°C two years ago. It being that cold is really exceptional here. I did not test whether AutoStop worked with ventilation OFF then - wasn't into that at the time. Engine coolant temp needs to be 48°C or higher anyway. The blue light goes off at 51°C, so it is possible to have AutoStop while having the Cold Engine indication on - just. __________________ 2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut. lifetime FE over 0.2 Gigameter or 0.13 Megamile. For confirmation go to people just like you. For education go to people unlike yourself. Last edited by RedDevil; 03-20-2015 at 11:46 AM..