[AT] Ram fuel mileage

Henry Miller hank at millerfarm.com
Sat Jun 14 09:19:34 PDT 2014 

On June 14, 2014 10:57:37 AM CDT, Jim Thomson <macowboy at comcast.net> wrote:
>I'll chime in here about my diesel car. I have a 2012 Jetta TDI
>Sportwagon
>with 105K miles on it. I have a a 55 mile commute to work each way. The
>traffic is brutal. On my way in it can take from 1.5 to 2 hours leaving
>at
>5:30 am. Coming home it can take from 2-4 hours due to the traffic.
>When I
>took the job I knew it would not work out driving a 14 mpg pickup
>truck. I
>settled on the VW and have not looked back. With my commute above, I
>get an
>average 43-46 mpg combined. There is a lot of stop and go so this
>knocks
>down the mpg considerably. We took a trip to beautiful Charleston, SC
>in
>February where the car got an honest 52.5 mpg for the round trip from
>Rehoboth to Charleston. So far it has held up very well although I am
>scared
>of the timing belt change coming up.
>
>
>Jim Thomson
>Rehoboth, MA 
> 
>
>-----Original Message-----
>From: at-bounces at lists.antique-tractor.com
>[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Spencer Yost
>Sent: Friday, June 13, 2014 5:11 PM
>To: Antique tractor email discussion group
>Subject: Re: [AT] Ram fuel mileage
>
>Hey herb,
>
>It's a 2011 VW Golf TDI 2door hatchback with the manual 6 speed
>transmission.   One of the last of the Wolfsburg, Germany cars.  
>
>My commute, each way, is 45 mile interstate and 18 miles of country
>roads
>with just a half dozen stop signs.
>
>
>In pure city/suburb, I still get 37-39mpg winter/summer
>
>I have never understood the difference in the seasons.   My only
>hypothesis
>is general thermal efficiency.
>
>Hope this helps,
>
>Spencer
>
>Sent from my iPhone
>
>> On Jun 13, 2014, at 15:29, "Herb Metz" <metz-h.b at comcast.net> wrote:
>> 
>> Have not been very attentive of some posts, but I sure noticed the 44
>and 
>> 47.  Your VW Golf diesel is what year? what transmission? sedan? your
>
>> principal transportation?  Engine size? Etc?
>> Herb
>> 
>> -----Original Message----- 
>> From: Spencer Yost
>> Sent: Friday, June 13, 2014 3:04 PM
>> To: Antique tractor email discussion group
>> Subject: Re: [AT] Ram fuel mileage
>> 
>> Thanks for the clarification.  I thought the urea was for the DPT and
>urea
>
>> was somehow burned during regen.   I did not realize it was NOx
>reduction 
>> instead of the detune.
>> 
>> I average 44mpg in the winter, and 47mpg in the summer (fill-up 
>> calculations - not computer) with my VW golf diesel.   I can't
>imagine 
>> Exhaust Fluid raising it much more than 3% and am very glad I have a
>spare
>
>> and no exhaust fluid.
>> 
>> BTW:  Am I the only one who think exhaust fluid sounds like the old
>"blinker 
>> fluid level" joke?  (-:
>> 
>> Spencer
>> 
>> Sent from my iPhone
>> 
>>> On Jun 13, 2014, at 10:36, Stephen Offiler <soffiler at gmail.com>
>wrote:
>>> 
>>> Most of the diesels available new in the USA are using DEF (that is
>Diesel
>>> Exhaust Fluid and is the common name for the urea that Spencer
>mentioned).
>>> There are some exceptions in the VW TDI lineup.  It's all a matter
>of
>>> meeting the US emissions specifications.  If they can tune (or
>detune)
>the
>>> engine to meet emissions without DEF, then they might choose that
>route.
>>> For example, VW detunes the Jetta TDI and omits DEF, resulting in
>slightly
>>> lower fuel economy versus the Passat TDI which does use DEF.
>>> 
>>> DEF controls oxides of nitrogen, not particulates.
>>> http://en.wikipedia.org/wiki/Diesel_exhaust_fluid
>>> 
>>> Yes, the new Ram Ecodiesel engine requires DEF.  Ram claims 11
>gallons
>per
>>> 10,000 miles which is 909 miles per gallon DEF. Some Internet forum
>>> discussion reports actual consumption rates slightly above 1000
>miles per
>>> gallon DEF.  1000 is a nice round number.  NAPA sells 2.5 gallon
>jugs for
>>> $14 (= $5.60 per gallon DEF) but it is starting to show up at gas
>stations
>>> for reportedly as little as $3 per gallon DEF. Let's just call it a
>nice
>>> round $5 per gallon.  That's an additional expense of $5 per 1000
>miles
>on
>>> top of fuel cost.  At 25 MPG and $4 per gallon for fuel, it costs
>$160
>for
>>> fuel to drive 1000 miles, so just make that $165.  If you were to
>think
>of
>>> DEF like some sort of fuel surcharge, it works out to 3%.
>>> 
>>> As a side-note, particulates are controlled with a Diesel
>Particulate
>>> Filter (DPF) which is built sort of like a catalytic converter but
>it
>>> doesn't do any catalyzing.  It traps the particles and then
>periodically
>>> heats WAY up (650C plus, which is 1200F plus) to burn the collected
>>> particles down to ash.  This is called DPF Regeneration.  It will
>happen
>>> naturally if you drive hard enough to get it that hot; otherwise it
>will 
>>> be
>>> forced to happen periodically (about every 500-1000 miles) by
>injection
>of
>>> extra fuel.
>>> 
>>> SO
>>> 
>>> 
>>> 
>>> 
>>> 
>>>> On Fri, Jun 13, 2014 at 9:08 AM, Spencer Yost <yostsw at atis.net>
>wrote:
>>>> 
>>>> One side note.  The diesel they build for the Chevy Cruz American
>market
>>>> uses urea injection for particulate control.    The urea tank is
>just
>>>> another tank to fill and eliminates the spare tire.   They give you
>a
>can
>>>> of fix-a-flat instead!
>>>> 
>>>> Not sure about about the larger engines.   I was only looking at
>cars.
>>>> In the end my wife decided to keep her VW diesel jetta (fuel is
>used for
>>>> particulate control) and run it into the ground.  Which is proving
>hard 
>>>> to
>>>> do (-:
>>>> 
>>>> Spencer
>>>> 
>>>> 
>>>> 
>>>> Sent from my iPhone
>>>> 
>>>>> On Jun 13, 2014, at 0:55, "Sewell, Steven" <sewell at ohio.edu>
>wrote:
>>>>> 
>>>>> Dennis keep us updated on the truck. The same diesel is an option
>in
>the
>>>> Jeep Grand Cherokee.  I've been looking at the Jeep for our "car"
>>>> replacement in the next year.
>>>>> 
>>>>> Steve Sewell
>>>>> Albany, Ohio USA
>>>>> sewell at ohio.edu
>>>>> sewell at atis.net
>>>>> ________________________________________
>>>>> From: at-bounces at lists.antique-tractor.com [
>>>> at-bounces at lists.antique-tractor.com] On Behalf Of Dennis Johnson [
>>>> moscowengnr at yahoo.com]
>>>>> Sent: Thursday, June 12, 2014 12:56 PM
>>>>> To: at at lists.antique-tractor.com
>>>>> Subject: [AT] Ram fuel mileage
>>>>> 
>>>>> All,
>>>>> The mileage numbers were calculated after entering gallons and
>miles
>>>> into a spreadsheet. I also did trip average for the long trips via
>>>> spreadsheet. I also do a running 3 tank average to check for
>incomplete
>>>> fill ups, etc.
>>>>> I do not have a good way to account for idle time, etc. truck
>records
>>>> idle vs drive time, but not sure exactly what to do with this other
>than
>>>> keep for general information.
>>>>> I am guessing the screen numbers on the dash are a little bit
>high, but
>>>> still impressed with the truck.
>>>>> Thanks
>>>>> Dennis
>>>>> 
>>>>> 
>>>>> Sent from my iPad
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Idparts sells timing belt kits, I've done it twice in my TDI, takes about 12 hours. The only hard part is the triple square bolts, make sure you get the tools. The second time I bought the kit without tools and then couldn't find my triple square. Order the factory manual at the same time. 

I have the older 1.9 engine, but shouldn't be much different. 
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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