biodiesel blends higher than B5 such as B20 2008 Jetta TDI: B20, B100 voids warranty?

Drivbiwire

Zehntes Jahr der Veteran
Joined
Oct 13, 1998
Location
Boise, Idaho
TDI
2013 Passat TDI, Newmar Ventana 8.3L ISC 3945, 2016 E250 BT, 2000 Jetta TDI
The 2008 uses a completely new Emissions system which is designed to run up to 100% Biomass GTL fuels "BTL". These fuels are 100% synthetic BUT 100% renewable produced completely from Biomass (anything carbon based which can be grown).

Running older non-synthetic bio fuels (aka 1st Generation Biofuel) results in a fuel that lacks uniformity in terms of how it will burn in these motors. Because of this lack of uniformity and "unknown" factor the risk to the emissions system is too great.

Whether VW will allow up to a 5% addition of 1st gen fuels (Biodiesel) is yet to be seen.

The BTL producers are multiplying rapidly and the availability is increasing all over the world. Here in the US demand is simply not there due to the small percentage of diesels relative to gasoline engines in addition to the low cost of fuel/gasoline.

If our fuels were to cost $7.00 a gallon as is the case in other countries we would probably be ramping up production of these synthetic fuels.

The transition to synthetic fuels holds a LOT of promise here because they can use other sources such as natural gas and coal which the US has enormous supplies of.

In the mean time and until BTL arrives ULSD is our best solution.

There are many programs afoot. One involves DaimlerChrysler, Volkswagen and the Freiberg, Germany-based Choren Industries GmbH who are in a cooperative effort producing synthetic BTL diesel fuels in small quantities right now. They are producing it initially from waste wood acquired from forest management. The effort first began with DCX and Choren, but Volkswagen is now fully aboard.
DB
 
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Long_Range

Veteran Member
Joined
Nov 1, 2004
Location
Arthur, IL , USA
TDI
Jetta Sedan GL 2004
2% biodiesel is all you need for gleening all it's benifits. Above 2% fuel millage and performance starts to drop.

We have 11% biodeisel on the 229 mile marker of I-57. In Illinois stations have to use 10% minimum to recieve a tax break.

I just put in about half a tank. Next time I fill from half a tank with D2 and still have two or theree percent. Would be nice if they made a pump you could dial in the mix like the two stroke oil gas pumps at the boat docks.
 
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