tl;dr
Add an alternative recipe for flamethrower ammo that works for Glebawhat?
Add a recipe for flamethrower ammo that uses light oil instead of crude oilwhy?
Fighting things with your personal flamethrower or the tank flamethrower is fun but sadly underused.Flamethrower ammo is literally the only item in the game that is made directly from crude oil, so there is simply no way to craft it on Gleba woth local resources.
This doesn't seem like an intended challenge, since you can make oil for flamethrower turrets with a bit of effort from coal (an appropriate challenge). Crude oil, however, only comes out of the ground, there are simply no other ways to get it.
I realize this is a niche problem, but it does seem weird that the ammo for flamethrower of all things can't be made locally on the planet with the most biomass.