I've been running B15 off and on for about a year now. Those stupid plastic fuel lines around started leaking, but not sure I can blame that on the bio because they tend to leak anyway. No problem with the return lines so far. Lightman has run B100 in his E300 at least once and he raved about it. He said it ran so quiet that it sounded like an electric motor.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
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