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  #37  
Old 10-14-2010, 02:57 AM
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Re: When can we expect better fuel mileage?

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Originally Posted by AIR_RAM View Post
Really... so the engine shuts off the fuel injectors completley off when in gear... So please tell me, if the engine is not running on fuel... how does it stay on? I would think it would need fuel to stay running... at least in my 25+years working on engines and racing... I never heard of an engine that does not need fuel to stay running.
Well, thats not necessary in all situations. When you drive down a hill, and do use your motorbreak (give no throttle), modern engines don't use any fuel. In the past they did, because of cooling. The engine get the rpms from the "powertrain".
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Old 10-14-2010, 04:21 AM
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Re: When can we expect better fuel mileage?

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Originally Posted by AIR_RAM View Post
... So far I have offered some advice to increase fuel economey...
1. What you are offering is BAD advice... you are NOT gaining ANY increase in MPG whatsoever. Zip, ZERO, 0.0000. You're actually wasting gas by putting your car into neutral!!

As has already been pointed out in this thread, when coasting in gear fuel consumption is at or near ZERO as there is no fuel being injected. When coasting in neutral, the engine is idling and consuming fuel.


2. In addition to wasting fuel, you run the risk of transmission damage...

From the 2011 owners manual:

"...coasting, or driving for any other reason with the shift lever in NEUTRAL can result in severe transmission damage..."

READ the section on recreational towing to understand more about reasons to not have the transmission in neutral when the vehicle is moving.


3. I won't get into all of the UNSAFE reasons why drivers should NEVER put their vehicle in neutral when driving, anyone who does not understood the risks should have their license revoked and invest in a bicycle.


BTW, if you are using the EVIC to calculate your supposed fuel gain you might want to know that the calculations used are NOT based on how much fuel is actually consumed.

And you cannot simply divide your actual gallons consumed by your mileage to try and measure supposed savings from coasting. Too many variables. The only accurate way would be with instruments and trained techs. And that has already been done, with the results confirming what has been stated above.
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  #39  
Old 10-14-2010, 04:45 AM
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Re: When can we expect better fuel mileage?

LOL... there you have it!

It does work!

Coasting has not caused any damage to my 45RFE trans in over 9 very abusive YEARS. BUT if somone where to overshift it past Nutral into Reverse then I can see how damage could happen... The 545RFE is mechanically the exact same transmission in every way except programming. There is no saftety stop on the shifter, this is where the possiblitly for damage could occur. BUT its also all electronic controlled, even the actual shifts are electrical commanded... so I dont even think a missed shift would cause any problems... but I still dont suggest missing a shift.

Pen and paper math must be wrong as well...

I do agree that there are many more veriables involved... and someone is missing a few in their very wrong OPINION.

I see nothing gained by going back and forth... You have your opinions and I have my facts... Lets just leave it at that. Until one of you actually trys it... your opinion will never expand into experience.

Hope you all have a great Thursday....

NICK
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  #40  
Old 10-14-2010, 05:55 AM
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Re: When can we expect better fuel mileage?

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Originally Posted by AIR_RAM View Post
...You have your facts and I have my opinions...
Fixed it for ya.
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Old 10-14-2010, 08:16 AM
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Re: When can we expect better fuel mileage?

LOL Milo is not messing around
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