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TDI Fuel Economy Discussions about increasing the fuel economy of your TDI engine. Non TDI related postings will be moved or removed.

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Old July 3rd, 2008, 07:23   #286
ofhs93
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Join Date: Apr 2004
Location: Scranton, PA
Fuel Economy: 51/46/42
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Well....I did it!
1012.4 miles
16.563 gallons
61.124 MPG

No offense to Gutwrench for not taking his advise...I didn't get to check here before going to work in the morning for any more opinions, so I never saw his post until after I had "made it to the summit" so to say. I don't think I will ever attempt to do this again with my normal weekly commute though....it's just too painful. I believe 900 mile tanks are regularly doable in my situation, but 1000 will only be saved for long trips in the future
I have the cluster picture saved on my cellphone...now I just need to take the time to figure out how to get it off there so I can post it up Thanks to everyone on here for providing the motivation I needed to REALLY give it a try. I would like my car to be able to wear the 1000/60 sticker with pride....(and tick off all of those smug Prius drivers that go blowing by me on the highway thinking they are saving the world) If there is a donation being taken to cover the cost of the stickers please let me know.

As far as mods and car stats go...
Sprint 520s
Not great tires to be honest (I bought the rims for a good deal and they still had good rubber on them) The fronts are at 44psi, backs at 36 (that is max for the rears..mismatched set for now)
The car actually has a bit of right front fender/bumper damage (obviously not enough to make the 1000/60 goal impossible)
Everything else is basically stock. I have a .681 in the trunk waiting to be installed..perhaps after that goes in then I will more easily be able to do 1000/60. It should put me in the RPM sweet spot at a more bearable cruising speed for me.
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Old July 3rd, 2008, 08:13   #287
mrGutWrench
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Quote:
Originally Posted by ofhs93
No offense to Gutwrench for not taking his advise (snip)
__. That's OK, my advice is usually worth about what it costs ya!!

__. Congrats about joining the club. All that is good. And, it's not really about whether you get a 1000 mile tank, it's that you're learning enough to get the best econ possible all the time thus reducing the amount of fuel you burn and the money you pay. You also get a benefit that you're learning about your car and you'll spot problems and any need for repair or maintenance earlier. That's a good thing.
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Old July 3rd, 2008, 17:24   #288
MikeMars
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Another 900 mile tank

Driver: MikeMars
Miles: 924.5 miles
Gallons: 16.468 (62.34 litres = 13.713 imp gallons)
Model Year: 2000 (early)
Model: Passat 1.9TDi 115hp PD
Tranny: Manual 5-gear
Fuel Type: ULSD

Calculating from the fuel used, it is just over 56 us mpg, which closely matches the trip computers estimate.

Another so-so tank in terms of MPG, but again I got over the 900 mile barrier by risking the reserve. Trip computer claims 67.4 imperial mpg, and the reserve light came on at 845.4 miles. Several long + fast journeys (with passengers) were without any special techniques being used, but during the last half of the tank I started experimenting with engine-off P&G which took the indicated MPG from 61 to 67.

The weather was generally warm and conducive for good mileage, traffic good also, but circumstances meant time was short.

This tank cost 81.80, which is about $ 162. 130.9 pence per litre which is roughly $ 9.90 per us gallon?


(Since there isn't a july mileage thread yet I've included info which I wouldn't normally mention in the 60/70 mpg thread)
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Old July 3rd, 2008, 17:54   #289
slauso
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Fuel Economy: 55mpg
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Hey everyone....just filled up today...went 1075.5kms on 50.5 liters.That works out to 60.05mpg. The best part is that this is 60% highway and 40% city going back and forth to work.I have changed my driving habits a little.I do not drive faster than the posted speed......do not race anyone to a stop sign/traffic light and if I see a slow down ahead I take my foot of the go pedal to avoid stopping if possible.My car has just under 48000kms(30k miles).
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Old July 3rd, 2008, 18:02   #290
no_one_of_consequence
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Quote:
Originally Posted by MikeMars
Another 900 mile tank

Driver: MikeMars
Miles: 924.5 miles
Gallons: 16.468 (62.34 litres = 13.713 imp gallons)
Model Year: 2000 (early)
Model: Passat 1.9TDi 115hp PD
Tranny: Manual 5-gear
Fuel Type: ULSD
Good work! But other Passat drivers report a higher tank capacity. Why your tanks are about 16 gallons?
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Old July 4th, 2008, 04:29   #291
MikeMars
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From forum postings it sounds almost as if there were two sets of Passats, one with slightly larger tanks and another set with slightly smaller tanks. Perhaps it has changed with the model changes. The only real way to find out is drive it until it runs out of fuel (but this is a real pain because it is hard to restart once the air gets into the system).
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Y2000 Passat TDi 115 PD RETIRED, M5, Best 75MPGuk, usually 60-70. 900m clubx7. 1000 mile clubx3.
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Old July 4th, 2008, 11:28   #292
bogeyboy99
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Fuel Economy: 45mpg
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Quote:
Originally Posted by woofie2
Tint your windows , to keep the temperature down in the car with the windows up, and run the vent fan, (or the A/C on low) the car stays cooler and well it looks cool.
I will be shooting for 900 at the end of the month when I leave on vacation or on my return trip from Colorado the beginning of July (got 40mpg in my gas Golf 3 years ago). I have seen 700 regularly in my TDI, last week I hit 680 when the fuel light came on and I was coming up on a station with $1.539 diesel so I had to stop.
That post was made 6/4/04. Damn.....
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Old July 4th, 2008, 12:28   #293
Lug_Nut
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Fuel Economy: 116 mpg(e), 36 mpg gas, 100 mpg combined
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Quote:
Originally Posted by no_one_of_consequence
Good work! But other Passat drivers report a higher tank capacity. Why your tanks are about 16 gallons?
B4 vs. B5.
18.5 gallon (70 liter) published capacity vs. 16.4 gallon (62 liter) published capacity.
28+ gallons (100+ liter) reality in the B4 variant vs. Don't know yet for the B5.5 variant...

She, who's taken over my B4V, today said: "There's a 1000 mile club? I'm almost there!"
Sorry, sunshine, Last night you said you were low on fuel so I added the last 10 gallons of bio into your tank. And 1000 miles on a B4V is expected. Better luck next time.
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Old July 11th, 2008, 06:45   #294
97B4TDi
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Fuel Economy: 46-52
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Do you guys think I will make 1000 miles on this tank? So far I have 950 miles and on my B4 fuel guage it is reading right above or at the red hash marks.
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Old July 11th, 2008, 09:00   #295
LarryLymb
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At what mileage did the reserve light go on? How far have you gone on the reserve before?
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Old July 11th, 2008, 09:05   #296
97B4TDi
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I dont have a reserve light on a 97 passat sedan
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Old July 11th, 2008, 09:11   #297
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With a B4V, you typically go 400 miles before the needle starts to move off of full (18 gal indicated) if you fill to the brim w/ ventectomy. I got 1,300 miles on just under 25 gallons. There is the post linked on the welcome page where Chris Bell went 1,400, and this was done fairly casually before the Scan Gauge came on the scene and really expensive diesel fuel brought on the body of hypermiling knowledge presented here in the past couple years.

I'd bet a real feather-foot on a cross country drive could get 1,500 miles easy in a B4V.
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Old July 11th, 2008, 09:14   #298
97B4TDi
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I have a sedan
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'13 Sportwagen: 58,XXX Miles - 3M Automotive Window Film Ceramic Series - VLT 30%
'97 Passat:
321,XXX Miles, Malone Eco Tune, Bosio PP 502, FAT/KFC Mod, Ventectomy, DRL Kill, 1000 Mile Club x3 / Auto Trim DESIGN


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Old July 11th, 2008, 09:15   #299
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Quote:
Originally Posted by 97B4TDi
I have a sedan
Yes I realize that. To answer your question above, you say you're still above the red hash marks. I think it's a gamble as to how far down in the red you can go. Some say they've run out shortly after hitting the red zone. I've personally gone to between the second and last red marks. Not really comfortable being down there!

But you're just looking to go 50 more miles. If these will be highway miles, I think you'll be fine.
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Last edited by Blue_Hen_TDI; July 11th, 2008 at 09:19.
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Old July 12th, 2008, 13:14   #300
97B4TDi
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I DID IT!

Driver: Jordan
Miles: 1012.3 miles
Gallons: 19.528 (73.92 litres = 16.26 imp gallons)
Model Year: 1997
Model: Passat TDI
Tranny: Manual 5-speed
Fuel Type: ULSD

MPG: 51.84

And a picture of my achieved goal:

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