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Biodiesel & SVO Home Biodiesel & SVO Forums Volkswagen TDI's Biodiesel in the new PD enginePage 1 2
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I ask a very similiar question before. I have a 2004 Passat TDI with the PD engine. I have used some BD without any problems so far. I haven't used enough to say for sure. When doing my research it turns that several people in Europe have been doing it for a longer time and lots of miles without any major issues.
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Hello everyone.
I'll be watching this (and any) post on the 1.9l PD engine. Last week I bought a new Beetle TDI, and am interested in making and using biodiesel for it. If all goes well would like to buy my wife a new Passat wagon. I'm also doing a diesel conversion on my 1977 Ford F-250 4WD Ranger XLT, going from 400M V8/C6 trans to Cummins 6BT/NV4500. Great Site! Thanks and post back soon! Mark "Try not! Do, or do not. There is no try." Jedi Master Yoda |
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I'm in the US and purchased a 2004 Golf TDI in May of 2004. I currently have about 14k miles on the engine, and have been running on commercial B100 for about 10k of those miles, 4k of which are D100 fill-ups here and there, so I've been using biodiesel since the beginning. No problems, and I do notice an idle difference between the two. The petro-diesel seems to idle a bit worse.
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i make biodiesel in rep of ireland and a customer bought 1000L of me for his 1.9 pd tdi audi and has encountered no problems and will be back for more bio shortly!
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Hi there irish guy,
Whereabouts are you located? I'm based in Co. Antrim but travel south from time to time. It would be good to know of reliable fuel sources so I can stay away from dino. It must be over a year since I checked into this forum. I see it's busy as ever! |
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Hi - I'm glad to hear you've had good luck with biodiesel in your PD. We bought a Jetta TDI '05 in March and have been using B99 since it became available in June. Immediately we noticed a drop in MPG (from mid 40s to mid/upper 30s) and more recently a serious power loss, especially in first gear. Changing the fuel filter hasn't helped, and the air filter was fine. The supplier is certified, but I guess they could still be selling substandard fuel. We're scheduled for diagnostics on Friday. Any ideas?
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What turned out to be the problem with your 05 jetta pd?
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I was quite suprised to see my earlier posting on Bio and PD engines up again. Just to update on my results, we have done about 9,000 ks on the bio with now problems. We just did our first trip South this weekend and did 800 klm before the low fuel alarm sounded. The trip involved some hill work and speeds around 110-120kph and a brief squirt to 150 no problems, though I suspect power is down a touch.
I also plan to get the engine oil tested as the car gets closer to it's next service. I recently got hold of a 200ltr drum of new soy oil and will be making some into bio. But I just saw some postings regarding soy and the rather high iodine levels and what could happen when using it. I will probably blend the soy with some of my other oils and see what happens. I shall read up more on the topic but if anyone has any thoughts on the matter I would be interested to hear. |
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I run B100 in my 05 TDI all the time. 16K miles and nary a problem. Mileage and power are just fine.
2005 Passat TDI--Keep your laws off my Volkswagen! |
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SimCott, I have a Touareg R5 TDI '05 model, and am about to buy my first 200 l drum of commercial bio from the Rutherford (NSW) plant. What is your understanding of VW Oz position on warranty, and is it an issue for you? I am reasonably satisfied that as far as VW Germany is concerned there wouldn't be a problem, but have had no response to an e-mail I sent VW Oz in January... ..Neil ______________________ '05 VW Touareg R5 TDI |
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Latest from VW Aus:
Thus, until there is Biodiesel sold at the bowser by Petroleum Fuel companies like BP and Shell etc, there will be no warranty support! BTW, if you have a problem with the quality of Petroleum Diesel, you would need to talk to the servide station, then the company supplying the fuel, in order to get compensation, NOT VW Aus. "Fatmobile 3" '84 MB300D Silver/Grey with dark blue interior. 290kkm My car - 2 tank UCO conversion working well. 22 000 km so far on UCO "Josephine" '82 MB300D White with Palamino MBtex interior. 385kkm Wife's car. 20 000km on UCO blends. "Elizabeth" '81 MB 280E Good body now re-engined as a 300D with the engine from the '79 300D.70 litre UCO tank, 2 pollacks switch FP, filters and IP between Start and UCO tanks. '79 300D poor body (donor & parts) "Fatmobile 2" '80 MB300D White with dark Blue interior 230kkm (My first MB) - 5000 km on biodiesel / UCO blend - Found new owner (Sold in 2004). "Fatmobile" a '90 Mazda 2 litre diesel on UCO with biodiesel start/purge. - SOLD in Dec 2003 after 40 000km on UCO. |
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Wow, I guess it's been a while since I checked in on this blog. The folks at the VW dealership solved our performace woes, supposedly by putting in a stock Bosch fuel filter. I question this because the after-market filter that I had just previously put in made absolutely no improvement. Somehow I wonder if VW is reluctant to disclose malfunction of troublesome emissions components such as airflow meters. After all, their drop in US profits was due largely to poor reliability ratings and defective parts. The plummet of the US greenback didn't help either.... Another theory is that the biodiesel that we had been using at first had gone bad. The early batches were made from tallow, which according to VW breaks down faster than soy or rapeseed fuels. This still doesn't explain, however, why the first fuel filter change didn't improve the performance. Anyway, we continue to enjoy MPG in the 40s using B50 in our '05 Jetta, and a couple of weeks ago we filled up with B70. With this our MPG was 41 with mostly city driving. In any case, we're delighted to be able to use >B20 and have hopes of experimenting with higher blends as the weather warms up. |
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I would like to know the details about these "additions". VW is not likely to sell these parts or a retrofit kit outside of Europe, for reasons mentioned. If we knew the details, however, we could probably come up with suitable substitute parts on our own -- at least for some of the items (heater, filter, etc). I did read a similar discussion on TDIclub.com, but that site is dominated by people adamant on proving their point. The kind of in-your-face delivery used by these people makes it difficult to accept the "facts" they provide to support their arguments. |
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I tried to find out more about the fuel filter and heater (and whatever else) VW supposedly fits onto cars ordered in Germany for use with BD. I sent a message to a person in Germany to find out. The answer he got was that BD is not recommended in the MK5s (Jetta/Golf PD). Now why would he get an answer like that being in Germany, where one can supposedly order a car with the special BD package?
Incidentally, the guy said VW had exactly the same warning about the MK4s until most of them were old enough to be out of warranty. Then, they said BD was okay in the MK4s. Still working on finding the details behind that VW-Australia letter... |
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Tallow is one of the most stable oils. It has a Iodine Value of between 40 and 50. This is far lower and much more stable than Rapeseed (98) or Soy (130), so I cannot reconcile that statement of Tallow Biodiesel breaking down faster than Soy or Rapeseed biodiesel. Someone at VW is talking thru his A$$ "Fatmobile 3" '84 MB300D Silver/Grey with dark blue interior. 290kkm My car - 2 tank UCO conversion working well. 22 000 km so far on UCO "Josephine" '82 MB300D White with Palamino MBtex interior. 385kkm Wife's car. 20 000km on UCO blends. "Elizabeth" '81 MB 280E Good body now re-engined as a 300D with the engine from the '79 300D.70 litre UCO tank, 2 pollacks switch FP, filters and IP between Start and UCO tanks. '79 300D poor body (donor & parts) "Fatmobile 2" '80 MB300D White with dark Blue interior 230kkm (My first MB) - 5000 km on biodiesel / UCO blend - Found new owner (Sold in 2004). "Fatmobile" a '90 Mazda 2 litre diesel on UCO with biodiesel start/purge. - SOLD in Dec 2003 after 40 000km on UCO. |
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I believe that this is just another piece of "mis-information" from VW Australia, to lessen the number of people who are game enough to try using biodiesel before they give it the "all clear". In Australia, one could use biodiesel from Palm oil ot Tallow, in B20 blends, without any fuel heating. If you wished to use biodiesel as B100, all that would be required is the CFPP temperatire of the B100, to determine whether the biodiesel is suitable for the climate in which you plan to operate the vehicle. The only time heating would be required, is if the CFPP of the available B100 is higher than the minimum overnight temperatures, and a simple heat exchanger can provide sufficient heat to overcome this problem. "Fatmobile 3" '84 MB300D Silver/Grey with dark blue interior. 290kkm My car - 2 tank UCO conversion working well. 22 000 km so far on UCO "Josephine" '82 MB300D White with Palamino MBtex interior. 385kkm Wife's car. 20 000km on UCO blends. "Elizabeth" '81 MB 280E Good body now re-engined as a 300D with the engine from the '79 300D.70 litre UCO tank, 2 pollacks switch FP, filters and IP between Start and UCO tanks. '79 300D poor body (donor & parts) "Fatmobile 2" '80 MB300D White with dark Blue interior 230kkm (My first MB) - 5000 km on biodiesel / UCO blend - Found new owner (Sold in 2004). "Fatmobile" a '90 Mazda 2 litre diesel on UCO with biodiesel start/purge. - SOLD in Dec 2003 after 40 000km on UCO. |
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Yes - The heater and filter sound like additional protection for the two main things bio (esp. B100) users encounter: relatively high-temp cloud points and substances precipitating out of the bio for a number of reasons (mixtures with D2, conversion quality, etc.) What I was hoping to find out was if that VW Aus claim is true: is there a "bio kit" in Germany, and what exactly does it contain in addition to the filter/heater? Some key pounders on other forums/websites claim there is such a kit, and everything is different including the tank, pumps, lines, filter, and injectors! BUT they have no sources to back it up (not even a letter). |
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if the BioDiesel is ASTM D6751 compliant I believe all warranties should be honored. The safe bet is of course to wait until all warranties are expired.
Reegards, Cheryl |
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I just purchased a 04 Passat TDI and will slowly start it on Bio. I have a 01 Powerstroke with 5000 miles on B100. I am a little worried about running bio in it so I will start out with B20 and work my way up. I will post progress.
2001 F350 Powerstroke B100 8000+ miles Super Chips 2004 VW Passat TDI, B50-B80 |
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Sponsors Biodiesel & SVO Home Biodiesel & SVO Forums Volkswagen TDI's Biodiesel in the new PD engine
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