I've read similar warnings about B5 or greater over on the TDI club forums. VW apparently didn't recommend it in their diesels beginning with the common rail models. I wonder if the biodiesel problem is directly related to cr designs. (Odd that they were so adamant about B5+ in their warranty literature while they were singlehandedly taking actions behind the scenes that would nearly kill the diesel passenger car market in the US... but I digress).
Quote:
Originally Posted by Squiggle Dog
Boy, I'm glad I'll still be driving my vintage diesel, then! It loves B99.
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I'm with you Squiggle Dog... when I bought my 02 TDI 4 years ago, I specifically got an ALH engine so I could run biodiesel with near impunity. We have a local biodiesel plant in the town where I work and they have a biodiesel pump a couple miles from where I live. My TDI loves the stuff (as did my '84 300D and my current '91 300D). In all three cars, the sweet spot seems to be around B30-B50. They all run better, smoother, quieter and gain about 1-2 mpg (vs. ULSD or B100).