suitable material for a petrol tank

[yas1]

Hi,
I'm considering designing an auxiliary tank for my motorbike and wonder if it could be 3D printed if there is a suitable solvent resistant material? I've seen polypropylene suggested for other strong solvents: would that work? It would need to have good impact resistance and not turn brittle in cold conditions (say down to -5C).
Your thoughts appreciated
Yasi