A couple of things are odd about the Oil item:
1) they're listed as being a pint, which would put them in the .5 to 1 lb range, and yet they're listed as having negligible bulk instead of L. Is a pint too large, or is their bulk too small?
2) their traits for when they're used as a thrown weapon are missing.
2a) Most importantly, do they get a range increment of 20' like Alchemical Bombs? (I'd guess so)
2b) Also, do they have the Thrown trait? (But then they'd get +Str to damage since they aren't splash weapons...)