Biofuel Blend - Existing Engine Compatibility
Biofuel blend compatibility with existing engine + fuel system - gaskets, separator, storage tank.
Compatibility
B7-B30 engine manufacturer approval
Formula, assumptions, and limits
$$\text{Comp} = f(\text{FAME}\%, \text{age})$$
FAME degrades EPDM / NBR gaskets - Viton required above B30. Higher oxidation / microbial risk. Cold-flow issues (pour point up). Engine manufacturer bulletin mandatory.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $FAME$ | Fatty acid methyl ester % | % | BDN |
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