i came here to ask about this same product. i just filled up in oakland today where i used to get b20. i was kinda angry at first because i thought it was some gimmicky way of saying D2 but apparently its "biodiesel" made from animal fats ? i put it in a 617 which can run on anything so im not worried about that, but im interested to see whether it provides more power than biodiesel and/or if it maintains the smooth and quiet running effects.

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1981 NA 300D 310k miles