Bio Fuel I make is Premium , passes 327test , ph is 5 , water content ppm insignifgets filtered b4 n after water block , 5% pre wash , and 2 bubble washes till ph of wash water is acceptable

 

rubber component compatibility from one of my other threads

SAE 30R7 is the most common fuel hose

SAE 30R9 is replacing those at the stores and will handle biodiesel at B20-B50 no problem.

Non Compatible Materials (B100)
Elastomers:
Nitrile Rubber
Polypropylene
Polyvinyl
Tygon
Behavior: Elastomers not compliant may degrade, soften, swell or seep from connections. Typically this only becomes an issue in vehicles built before 1993 which have older rubber hoses.
Metals:
Brass
Bronze
Copper
Lead
Tin
Zinc
Behavior: These metals can accelerate oxidation of the fuel and create insoluble gels and sediments when exposed to Biodiesel and air.
Paints: Most oil-based non enamel paint will be degraded by Biodiesel. Spills should be cleaned immediately with soap and water.

Compatible Materials (B100):
Elastomers:
Teflon
Viton
EPDM
Fluorinated Plastic (i.e., Fluorinated Polyethylene, Fluorinated Polypropylene)
Nylon
Polyethylene (HDPE)
Silicone
Behavior: These materials can be used to transmit and store Biodiesel, this includes “red plastic” gasoline cans, polyethylene barrels and large plastic totes.
Metals:
Aluminum
Steel

Compatibility with B20:
No negative effects have been observed for elastomers and metals exposed to B20, which are compliant with petroleum diesel to begin with. Materials compatible with regular diesel should perform the same when used with B20.