SVO w/o heater in summer

[allenying]

hi,
i found some jugs of vegetable oil by a dumpster at a construction site. i'm pretty sure they oil hasn't been cooked, based on the face the boxes were sealed. it's a hot summer, can't i just run this straight in my fuel tank? i'm already running commercially made B99 biodiesel, but it's 45min each way to fill up, so any amount i can stretch, and for free, i'd like to do.

thanks!