CarYoga
New member
Does anyone have any advice about which fuel additive is best for the TDI...VW Jetta Wagon 2005?
http://www.stanadyne.com/dsg/showfile.asp?id=1107VW recommends Stanadyne Lubricity.
The dealers largely stock Stanadyne Performance. .
Interesting comment, because it contains Barium compounds according to its msds, one of the few. Barium is touted as being a good smoke suppressant, so maybe it does work from your report.I use Amsoil diesel fuel conditioner
I use it because it cuts the smoke down to almost none existent.
It seems to match Power Service in all respects. Or should I say that PS matches Stanadyne and may be better even.
Why VWoA selected Stanadyne as the "preferred" product I'll never know. It sure wasn't for its technical merits.I just had this nice message from the good folks over at PowerService:
'dork,
Good question and since I do not know the level of your understanding about water dispersants I will give you the long answer.
A Demulsifier, an emulsifier and a water solubilizer are all water dispersants. All diesel fuel has water in it. The water that is in diesel fuel will not hurt or harm the motor, pumps or injectors. Low Sulfur diesel fuel usually has around 50 to 65ppm (parts per million) water in the fuel. When the water content of the fuel gets around 100ppm or higher, the more likely fuel filter icing will occur when the temperatures become severe.
An emulsifier will pull water up into the fuel as small droplets and often will cause the fuel to be cloudy. In the winter months when the temperature drops below freezing, these water droplets can freeze on the filter face of the water separator causing the flow of fuel to stop, even though the fuel is still liquid. It does not take much water to cause Fuel Filter Icing problems. Also, as the temperatures drop water in the fuel can fall out depending on how much water is in the fuel and how cold it gets, which adds to water problems.
A solubilizer will take the water and solubilize it back into the fuel. When this happens you will not have water droplets suspended in the fuel and when you look at the fuel it will be clear and not cloudy. This is the preferred method to get free water out of the system and to keep the water that is in the fuel from falling out.
Demulsifiers will cause excess water to fall out of the fuel or pool. This water will fall to the bottom of the fuel tank or fuel system and can cause corrosion, rust, reduced lubricity and in the winter months it can freeze in the fuel lines and prevent fuel flow. There are about a dozen demulsifiers or de-hazers on the market. None of them will work on all fuels. You have to test the fuel you are using against the various demulsifiers to see which one will work with that fuel. They are fuel specific and when an additive company says they use demulsifiers in their additives it is for advertisement purposes only. If you talk to any Chemist that knows anything about demulsifiers they will tell you the same thing.
Warm fuel will carry more water than cold fuel. When it gets cold some water can fall out of the fuel, or the water separator can squeeze out this excess water which can freeze on the filter face and cause the fuel to stop flowing through the filter even though the fuel is still liquid. This is call Fuel Filter Icing and is often mistaken for fuel gelling.
Our Diesel Fuel Supplement (DFS) contains a deicer that is intended to keep the water in the fuel from falling out. The deicer in DFS can also help to solubilize small amounts of water in the fuel system. If too much water is in the fuel tank it can overpower the deicer in the Diesel Fuel Supplement. So, DFS is neither a demulsifier or an emulsifier.
I hope this information helps.
Best regards,
Technical Support
Power Service Products, Inc.
It contains antifreeze, Ethylene Glycol., but a water freeze suppressant so water should stay liquid and be removed by the water separator.
Its a global recommendation.Reality of it is, .... VW recommends Stanadyne, then Stanadyne is ..... adequate as a fuel additive.