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  1. 8

    Biodiesel for MEP-802/803 and 531A

    It's not that bad. You'll be around ~94% of rated output. FKM rubber has the best chance of standing up to biodiesel. It is common in modern fuel systems for o-rings but is very expensive to be used for hoses. NBR is the rubber to be concerned about. HNBR is a newer rubber that substitutes well...
  2. 8

    Biodiesel for MEP-802/803 and 531A

    What gaskets are exposed to fuel? There are a few seals in the injection pumps that may be, they should be Viton.l which handles any fuel. The power rating of the engine may be reduced.
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