I have finished the neptune & emerald quests and now I have this "Collecting Parts Quest". I need to collect 15 each of Super Adhesive Tape, Super sensitive Antenna, & Quantum Accumulator.
To get these items, I need to trade with Robots (not all robots gave each item):
Vacuum Robots gives Quantum Accumulator (5 oilcans needed)
Television Robots gives Super sensitive Antenna (10 oilcans/10 energy needed)
Musical Robots gives Super Adhesive Tape (15 oilcans/15 energy needed)
15 each means I need (15x(5+10+15))=450 oilcans
[I must add that buying the parts (1 diamond each) are a lot cheaper than buying oilcans to trade with the robots].
I've seen other thread about oilcans needed to banish the professor's robots for the recorder quest.
Can someone recall if the recorder quest comes after this collecting parts quest? Or is it possible that the recorder quest comes while this quest is still on? It would be better to have both quests at the same time as it means I don't need more than 450 oilcans. If the recorder one comes only after this collecting parts quest, that means I need (another) 300 oilcans to finish the quests!
I wonder how many diamonds do we really need to finish every quests... I don't use it a lot, but some quests (like getting sails as I need someone with level 199 to get the sails) are quite impossible to finish.