Why is AT less efficient?

caprice Why is AT less efficient? 02-26-2007, 09:05 AM

MetroMPG You're right on all points,... 02-26-2007, 09:48 AM

diamondlarry I am by no means promoting... 02-26-2007, 12:03 PM

skewbe As for "why", there are... 02-26-2007, 10:02 AM

skewbe Also I would guess that they... 02-26-2007, 10:07 AM

MetroMPG Good point - rarely mentioned. 02-26-2007, 10:14 AM

landspeed If you put them in Neutral at... 02-26-2007, 12:08 PM

MetroMPG That's true, Larry, within... 02-26-2007, 01:06 PM

diamondlarry I'm REALLY glad I have a... 02-26-2007, 01:08 PM

rh77 Slushbox 02-26-2007, 06:57 PM

cfg83 diamondlarry - My... 02-26-2007, 07:17 PM

rh77 Speaking of Manual 02-26-2007, 09:34 PM

GasSavers_Lincoln With the 4T65E-HD (4-sp... 02-26-2007, 07:06 PM

caprice It would be cool driving a... 03-01-2007, 01:51 AM

brucepick synthetic tranny fluid? 03-02-2007, 07:09 AM

MetroMPG From a FE perspective, the... 03-02-2007, 07:14 AM

Snax I've noticed that our F150... 03-04-2007, 10:54 AM

caprice When I did my engine swap i... 03-05-2007, 01:50 AM

brucepick What's short shifting? A... 03-23-2007, 04:54 AM

MetroMPG Short shifting just means... 03-23-2007, 05:03 AM

brucepick OK. I've been doing what I... 03-23-2007, 05:21 AM

MetroMPG The cable adjustment should... 03-23-2007, 06:22 AM

rh77 Bruce- Holy cow, don't forget... 03-23-2007, 11:08 AM

SVOboy Slackening off, is, I think... 03-23-2007, 11:29 AM

rh77 Adjustment Area 03-23-2007, 11:58 AM

02-26-2007, 09:48 AM	#2
MetroMPG Registered Member Join Date: Dec 2005 Posts: 4,223	You're right on all points, and "yes" to your question. Automatics restrict how much freedom the driver has in choosing how much to load up the engine. (EG you can't short-shift an automatic.) Also most automatics are ill-suited to being used for one of the most effective ecodriving techniques: engine-off coasting. (Most autos rely on an input shaft-driven pump for lubrication. With the engine is off, these can be damaged by excessive coasting.) __________________ FF ForkenSwift cheap electric car conversion- Geo Metro fuel economy mpg modifications

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