Finally...800 Mile Club!

[Scoutx]

I agree getting 59-60mpg which would result in a 900 mile tank is doable. However, whether one can do that in the course of 'normal driving' for an entire tank is another story. I have a theory on how it can be obtained in an unmodified Jetta and I'm going to give it a go this fall once the weather mellows out a bit. If the stars align and God smiles I may pull it off. We'll see.

 

[jettawreck]

I agree getting 59-60mpg which would result in a 900 mile tank is doable. However, whether one can do that in the course of 'normal driving' for an entire tank is another story. I have a theory on how it can be obtained in an unmodified Jetta and I'm going to give it a go this fall once the weather mellows out a bit. If the stars align and God smiles I may pull it off. We'll see.

Acually the 900 mile tanks I've run took 16.1-16.4 gal for a 55 mpg tank average, which makes it quite doable when things go right. Only pushed it that far about five times now, so far at least.

 

[Oilerlord]

Acually the 900 mile tanks I've run took 16.1-16.4 gal for a 55 mpg tank average, which makes it quite doable when things go right. Only pushed it that far about five times now, so far at least.

Lots of guys have reached the magic 900 number with their older TDI's, and vented tanks.

Scoutx is referring to how difficult it is to achieve 900 miles on one tank with an MKV6 Golf / Jetta - and probably impossible with "normal" driving. Even if you could cram an additional 1/2 gallon of diesel in the tank (for 15 gallons), that's averaging 60 MPG. I don't think anyone here has done it.

 

[Savageman69]

i was less then 40 miles from doing it and i plan to soon

 

[Oilerlord]

i was less then 40 miles from doing it and i plan to soon

Not sure that's a good idea, since it's been noted that the HPFP needs fuel for proper cooling. There very well may be a correlation between the failures and driving on fumes.

In light of a fellow members struggling with the HPFP issue, I've started using a lubricity additive and won't run the tank under 1/4 anymore.

 

[IndigoBlueWagon]

Not sure that's a good idea, since it's been noted that the HPFP needs fuel for proper cooling. There very well may be a correlation between the failures and driving on fumes.

In light of a fellow members struggling with the HPFP issue, I've started using a lubricity additive and won't run the tank under 1/4 anymore.

This is a myth, absolutely no data to support it. The fuel pickup sits in a bowl in the bottom of the tank, and the HPFP will have continuous supply until the fuel is completely gone. It will have adequate cooling. Any other issues with running low fuel are rumors, not facts.

 

[Oilerlord]

This is a myth, absolutely no data to support it. The fuel pickup sits in a bowl in the bottom of the tank, and the HPFP will have continuous supply until the fuel is completely gone. It will have adequate cooling. Any other issues with running low fuel are rumors, not facts.

Thanks for clearing that up. So you're saying that it's OK to run the tank to empty on a regular basis? Others have suggested that sediment / water may collect at the bottom of the tank over time, and that you don't want that going through the HPFP. Is that also false?

 

[BRUSSELS BELGIAN]

1300 miler!

Indigo's 97 Passat once did a 1328 mile tank...

 

[IndigoBlueWagon]

If there's sediment in the tank it's going to get stirred up every time you fill it. And that's what the fuel filter is for. I didn't say you should run it out of fuel, but there's no evidence that running it low will cause any harm.

 

[IndigoBlueWagon]

Indigo's 97 Passat once did a 1328 mile tank...

You should know that we still refer to it as "Jack's car." Always will be.

 

[PalmettoNative]

The closest I was ever able to get out of my 2011 Golf TDI (6MT) was 790 miles out of a tank, and that was as far as I dared push it.
Averaged: 52.96mpg that tank, and that was old lady driving and watching my revs.

 

[GaryTDI]

The closest I was ever able to get out of my 2011 Golf TDI (6MT) was 790 miles out of a tank, and that was as far as I dared push it.
Averaged: 52.96mpg that tank, and that was old lady driving and watching my revs.

You might find that you can make it after your tune (as long as you continue the old lady driving of course)

 

[Oilerlord]

You might find that you can make it after your tune (as long as you continue the old lady driving of course)

Unless he removes the banned subject, the stage 1 probably won't help much in terms of MPG. Since I removed the banned subject from my JSW, I'm now over 40+MPG on a consistent basis - my last tank was 45MPG. I was averaging around 37MPG before the procedure.

I've done the "old lady" starts, and ripping into the throttle to get to speed. Many advise doing the latter as to take advantage of turbo's effect on MPG. I haven't found much difference in MPG either way but the drag-race starts are a lot more fun.

 

[GaryTDI]

Unless he removes the banned subject, the stage 1 probably won't help much in terms of MPG. Since I removed the banned subject from my JSW, I'm now over 40+MPG on a consistent basis - my last tank was 45MPG. I was averaging around 37MPG before the procedure.
I've done the "old lady" starts, and ripping into the throttle to get to speed. Many advise doing the latter as to take advantage of turbo's effect on MPG. I haven't found much difference in MPG either way but the drag-race starts are a lot more fun.

I agree that drag-race starts are very fun. I only do them now and then though as an attempt to blow any collected carbon out (Italian Tune as I've heard it referred to here)

My comment on possible improved fuel economy from a tune is only anecdotal but based on my own observations. As always there are way too many variables in daily driving to know for sure.

Just need to add that my observations on this do not involve any banned subjects, just a plain stage 1 tune.

 

[jettawreck]

Thanks for clearing that up. So you're saying that it's OK to run the tank to empty on a regular basis? Others have suggested that sediment / water may collect at the bottom of the tank over time, and that you don't want that going through the HPFP. Is that also false?

Fuel pickup tube always is picking up fuel from the bottom of the tank.

 

[2.2TDI]

Count me in




1300km is 812.5 miles. Filled up to 61.1L (16.1g) which got me a consumption of 4.7L/100km (50.1MPG)

 

[Daekar]

I just got my first 800 mile tank! It was combined city and highway, biased towards highway, and I went 830 miles with just over a 16 gallon fill up, for a tank average of 51.2mpg. I'm just tickled to death. . It should go up just a bit if my new smooth wheel covers pan out. Thank heavens for Power Service and 2-stroke oil... my car never got mileage like this before I started using additives.

 

[JohnWilder]

I drove 2225 miles from California to Texas with sightseeing along the way in my 2003 Jetta, manual. Total fuel burned was slightly below 40 gallons (U.S.). It worked out to be 56.2 mpg or 4.11 liters per 100 kilometers.

 

[Jergren]

Finally I get to be in this thread!

Not bad for a BRM!

 

[SuperAdellic]

Good job with the BRM.

 

[TheBender]

I just did 806.3 miles on 15.134 gallons = 53.3 MPG! This is a 1998 NB with RC Stage III+, SMIC, Race pipe, upgraged clutch, CAT back, VNT-15 and Sprint 764 injectors. I have a VNT-17 but it needs to be rebuilt, not sure what that will do to the averages. The average over 16,000 miles is 45.55 MPG, but to get 53.3 I drove in the slow lane between 55-60 MPH. I coast in gear as much as possible. The light came on at exactly 770.0 miles!

 

[jettawreck]

I parked at work this morning with 846 miles into the tank. I'll get fuel before heading home. I suspect a 53 mpg tank, so wouldn't positively make 900 miles or the fuel stop at the other end of the commute. I'm about 50 miles into the fuel warning light and another 40 would be pushing it a bit, although probably makeable.
Diesel price is down a bit to $3.749/gal at the work end of the commute, still $3.999 at the other end. Loving the cooler temps here. Lows in the upper 40's and highs in the 60'sF.

Fuel up was at 851 miles/15.66 gal. 54.3 mpg tank. Scan Gauge was pretty much right on the number at 15.7 gal.
Every tank on the '03 since June has been 800+ miles and consistantly in the 53/54 range for the work commute.

 

[zukikat]

So last night my 2001 Jetta GLS TDI 5-Speed that's still on the factory tune just gave me over 800 miles from 16.8 gallons of fuel with working EGR and balanced Kerma PP520 nozzles and upgraded intercooler and upgraded pancake pipe and 3.0 IQ and Pump Timing adjusted to just below the top graph line with a bit of city driving and fast-food drive-thru idling in the mix but the cruise set at 71mph for my work commuting most of the time, along with a hand-full of Wide-Open 90-110mph pulls to get away from annoying repeat freeway leap-froggers and tail-gaters and even a few burn-outs, some intentional, most not as my local TDI friends tell me my "6th gear and ASR/ESP are broken!" (I don't have either)...
a.k.a. agressive driving, not actually trying for good economy and still somehow ended up accidentally joining the 800 mile club last night, yay...

It "only" equated to 48mpg but it's my best tank ever on a TDI and it was still 800 miles on a single tank with me at the wheel using the A/C randomly as needed and doing at least the posted interstate speed limit the whole time or faster on my 50 mile (each way) work commute...

Now I'm all eager to slow things down a bit and mellow it out and attempt that elusive 900 mile goal.
We'll see if I have that much patience. Doubtful but time will tell...

 

[IndigoBlueWagon]

I got my wagon re-tuned at TDIFest, RC4+ with a lot less fuel than the RC6 I've been running for the last 4 years. Swapped my 215/60-15s for the Avus Is with Michelin Pilot A/Ss on them (195/65-15). Noticed last week that I was at 500 at a half tank. But I mostly drive shorter trips in suburbia these days so I didn't think I'd get much above 700. I was wrong.

16.1 gallons, 49.8 MPG. My usual driving, 75-80 on the highway, lots of short trips. I think I like this tune.

 

[TDI_FNG]

Seattle to Sunriver, OR and back. Drove very spirited on the way down (70-80mph) and was sitting at 425 with just over half a tank.

Decided to take it easy on the way home and did 60 all the way home, with some drafting behind semi's (the missus didn't care for that too much ).

Took 15.6 gallons, so I had just a little wiggle room (most ever without running out was 15.8 and I was a bit nervous). I don't know if I will try for 900 miles. Driving that slow for that long, and I might die of boredom.

 

[krauseengineer]

I spend a lot of time behind the wheel everyday between the hour commute each way to and from work and all day in a truck at work. So I've had a lot of fun since I got my Jetta (a little over 2 years ago) seeing what does and doesn't work to help MPG. I'm totally stock. The first trick I learned was Vent Filling... Then I started refining my driving habits. I take it easy but not totally babying it. I easily get over 700 every tank if I let it go that far. Where I live fuel is .30 cents a gallon more than what I go by to and from work so I make sure I never have to get it by my house. So.... anyway, I've managed along the way to get 2 tanks over 800 miles. One at 804.1 and the other at 802.9. I cant wait to see what I can get if I ever get around to doing some tuning on the car.

 

[noxneon]

I've done it twice in this Jetta. The trick is gonna be to get 800ers consistently, and doing it with as little modification as possible. That's my primary goal, mini mod. Not maximod.

 

[Scoutx]

I always see these 800 mile tanks....and then just grin having been, so far as I know, the first to do it in a Mk6 Jetta.

 

[JDSwan87]

Woohoo!! 803 miles/ 14.7 US gallons = 54.6mpg!!! The light came on at 780 miles!! Super pumped!! 2001 Jetta TDI 5 speed

 

[SirSipsAbit]

Can I do it in my 12 jetta?

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