FAME
But...
My understanding is that FAME is a component used in automotive gas oil (diesel), in markets where there is, for whatever reason, a need to use renewables.
Pinkman and others are quite right about multi-product pipelines, and I know that there are all sorts of concerns about aviation fuels passing thus, particularly where there are fuels containing renewable components passing along the same line; even if it's pigged, as pointed out, the piggies are not fool- (or leak-), proof.
And the but is... does anyone know if there is any likelihood that the Chinese market is using renewable components in their diesel or other fuels? I'd have guessed not, but it's a while since I have been there, and the one thing that one can say about China is that change is rapid... or, was there a period when the fuel supplied at Beijing was from an 'unusual' source (perhaps cargoes brought in by sea), and there might have been contamination from such a component introduced, e.g., from a product tanker?