[Vwdiesel] Quantum Milage pre & post re-ring

[Chris Geiser]

I've noticed the same thing as Travis on my wifes 09 tdi, better mileage
with engine braking vs coasting in neutral... I've driven that way for my
entire life and have never had clutch or tranny problems (presently at 350K
miles on my current 92 Jetta), and brakes last over 100K miles...

CG

**Sent with mobile device.
 On Oct 7, 2010 4:35 PM, "travis gottschalk" <tgott at hotmail.com> wrote:
>
> Diesels aren't the same. If you let off the throttle on at least the new
TDI cars it totally cuts fuel when in gear. I am not saying to downshift as
you are braking but it is best to hold it in gear till you are down to
around idle RPM then put in neutral. I am not a fan of burning the clutch up
either. I use a Scan guage II which basically tells the same things and it
will show 9999MPG when coasting in gear and it will show like 100 MPG
coasting out of gear. Not a huge savings but if you coast down a whole
mountain the savings both on brakes and fuel works.
> Travis G
>
>> Since 1996, all new cars sold in the USA have to be OBD 2 compliant
> which means that any car must have a standardized plug that you can
> plug in an OBD 2 reader to find any problems stored on the car's
> computer. Mark, I don't know if this applies to cars sold in the UK. The
> reason I mention this is that I bought an MPG meter that plugs into the
> OBD 2 port on my 2001 Focus from JC Whitney. The brand of the meter is
> Kiwi & it is made in Calif., not China. It has several functions, of
> which one reads average MPG & another reads instant MPG. It is
> interesting to watch MPG readings while decelerating. If I put the car
> in neutral & use the brakes to stop I get readings of 150 MPG. If I
> slow down while in top gear or 5 th gear, MPG will run from 90 to 120
> MPG. If I shift into 3rd using the engine to slow down, which I often
> do, MPG is around 45 MPG. Observation: For maximum MPG, when braking,
> put the gear box into neutral & use the brakes to slow down.
> Shifting the gear box into a lower gear to avoid using the brakes
> results in a lower MPG, but does save on brake pads. I can see how a
> Prius gets 50 MPG (USA) because it can recapture energy used in braking.
>
>> Bill Toensing
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