Start Date: April 13th Previous Chapter:Chapter 6 Next Chapter:Chapter 8
Vocabulary List
Kitsun
Here is a vocab list on kitsun.io for the manga. Keep in mind that the vocab list was automatically generated by parsing the manga and running it through a dictionary, so there can be errors. If you see any, be sure to report them (from within Kitsun) so that they can be fixed.
So, I was wondering. I know nothing about fuel, gasoline and the like, but doesn’t it go bad at some point? (I don’t know; slow chemical reactions, contamination from random stuff from the environment, …)
I imagine it goes bad at some point, it’s just that that point is too far ahead, and we also don’t know for how long they’ve been in this post-apocalyptic scenario. I’d say not that long.
I mean, randomly googling told me that in a metal tank (which seems to be the case here), it’s only good for 3 months, or up to one year with chemical stabilizers. I found some stuff about people being able to start their engine with respectively 3 yo and 5 yo fuel. Considering the state of disrepair of the place (plus how long it took to map the whole area), I have a feeling we are way beyond those numbers.
Now, we can also assume that the gasoline that broke down is lighter than the rest, and thus should rise to the top of the tank. Since they are getting it from the bottom, maybe it’s okay?
Am I overthinking all this? Probably.
So finally got to this chapter Been busy today…it looks like only half of the group is at this point…either gave up are behind or didn’t take the poll?
I’m an engineer…and I work in energy and chemicals…this what I do for a living
knowing the answer will ruin your view of the imaginary world of manga…haha…
but since I can share some insight…
first off…this post apocalyptic world is post war…first thing anyone will do is ration whatever stock piles they have for fuels (that’s everything)…think WWI/WWII (but apocalypse…so much worse)…
then imagine these are strategic resources so they will be the first that are attacked to weaken both (or as many sides as are fighting)
Whatever fuels are left that are fought over, etc…would be gone…or people would just burn them (if I can’t have it no one can…think back to the Iraq war…and all those wells that burned for months…huge environmental mess and such a waste of resources)
Then assuming you still have fuel left…it’s not really stored “ready to use” in tankage for filling (like you might think)…sorry to burst the bubble…blending pumps are used at the refinery to blend online directly (small quantities) for immediate use to the truck/rail loading racks. This is partly due to the ethanol blending requirements. Ethanol is hydroscopic (absorbs water)…water in fuels is generally bad…so it’s not mixed until it is going to be used. Diesel and Jet is typically pumped through a dryer (depending on what’s available to the facility)…There are tanks for batches that are mixed, but it isn’t just sitting around for more than a day (generally). It’s made and shipped back out. Off spec blends (depending on the reason) are either adjusted for octane or if it’s a sulfur spec that’s off it might be shipped to a different part of the country (usually pipeline)…i.e…stuff that you can’t use in California you can use in other states…
So assuming that all of this somehow happens to be possible… and that by some miracle there is still an undamaged tank full of gasoline range or diesel range material that’s on spec and ready for your tank…if it sits around for a few months…this is what happens…
First off the light ends vaporize…more of them are added to your winter fuels you need a high enough vapor pressure to start the engine (butanes and light c5s)… these leak continuously through flanges/floating roofs/etc…(it’s very slow but it does happen…post apocalyptic…unmaintained equipment…they will vent off quick)…it’s the reason you can’t just put straight run material into your engine …it won’t start or it will vapor lock (too heavy/too light). or you’ll get knocking (preignition/ damages the engine)…also w/o sulfur and nitrogen treating (hydrotreating)…your catalytic converter will die so fast…and olefins will gum up your injectors… on and on and on…Gasoline and cars now aren’t anything like they were in the early/mid 1900s. Fuels now (all of them) are much cleaner and much less “wild” …You can put in stabilizers to try to maintain fuel for longer term storage, but to last for a post apocalyptic event…forget it…
Sorry to bust the bubble…but apocalyptic events are just bad all around … personally I don’t have any desire to be a prepper…surviving a war is one thing…apocalypse, nothing really left…that’s a whole different thing…that’s truly the end of the world right?
Yeah I tried to keep it as simple as possible… It’s general and not a perfect explanation… When people ask what I do… Their eyes glaze over… Lol… So I always have to simplify haha… Why is engineering so much easier for me than Japanese! Why why why lol!
Maybe the refuelling station is making its own fuel. Like, out of the air, or something. It certainly looks more intricate than just a fuel storage tank.
I rather like how the sound effect of the fuel pouring is behind the fuel stream.
A quick reminder to all not to over-read - the last page of the chapter is 132, the one after the double-page spread.
You’re absolutely right! No one ever said this was exactly our planet earth… Maybe the laws of physics work differently here… Fuel from air… Would sure make filling my tank cheaper