Quote:
Originally Posted by 320touring
The engine Bay could do with more insulation, and I should fit the damn thermostat I have sitting to go in.
Then there are the other considerations:
1. I dont feel comfortable with the idea of EOC/mechanical shutting off of fuel on my commute- the traffic conditions dont really allow for it to be done comfortably, in my opinion..
2. I have, however, considered screwing the idle stop out to drop the hot idle down from 1000rpm- thus lowering my fuel consumption during E(on)C/braking events.
I know its a half way house, but until I'm entirely satisfied with the ability of the car to start/stop on demand, it'll do.
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320, I'm subscribed, partly to see what happens when you get that new thermostat in. Everything I read about diesels says they run best when fully up to temperature and they like lots of cool air to breathe, so I think you are on the right track. There is a thread on TDIclub about a guy who made a 205º F hybrid thermostat to try to get better mpg, and he lives in Florida!
I hypermile and coast with the engine on but never engine-off. I am concerned about wear and tear on the drivetrain and possible oil starvation to the turbo. Besides, diesels can run super lean at idle so coasting in neutral at speed I am showing 400+ instant U.S. mpg on my ScanGuage. Petrol cars are very innefficient at idle but on a diesel E(Off)C is not worth the trouble in my humble opinion.