Please enjoy this image of GZ being made to wait for his “oil change”. This is a part of a the question/answer section, but all I could gather is that yes, they “go”, but just like any other machine. They have to have their oil changed.
(Note: Unfortunately there’s decent chunks of translations missing here, couldn’t get everything. Tried my best!)
► Scary to children…
► Episodes 12-14 show in the inside of the mobile base. “I was working on a strategy here.”
► Lol [yes there’s a Japanese word for “lol” in this 1994 guide] at the advice of Ryuuken. He [struggles] to remember the face.
► Mercenary era GZ. Survived at the expense of his relationships.
► GZ defended the children alone. “I’m good at fighting in cold regions.”
► There are ballistic engines in a number of areas [on his body].
► GZ seen from the front. Former mercenary, only boasting heavy armor.
► Profile of GZ. Middle-aged?
► The sole of GZ’s foot. He knows how to maintain his often-stored blades.
[The section with Windy and Ace, couldn’t figure out the title beyond “one side”]
Oils are sold in limited seasonal premieres according to popular tastes. There’s a lot of unsavory oil traders who only buy up bad reviews. (It’s a shame but common in society.) In addition, the middle of the summer is the favorite season for limited oil. Between rare and bad oil, it’s a depressing feeling.
(Please note! I’m interpreting the contents of Shippū! Iron Leaguer Perfect Guide with the help of software, so the information might not be perfectly accurate in some cases.)