I wouldn't bother using it for AEG internals. The grease that remains in your mechbox is going to remain there for a long time. Oiling it may actually carry the grease away from the gears/bearing surfaces...and remove a protective layer. With regular maintenance (and I suspect that you're into your mechbox more than once or twice a year
) you'll never need to worry about lack of lubrication.
Keep it for oiling your pistol (pivoting/moving parts, etc...). It is heavy for oiling GBB mags...I've used it by accident once or twice (not really an accident the 2nd time) and it hasn't hurt anything, but I wouldn't use it regularly.
I got a little plunger thing that I can use to oil a whole can of gas at once (I've used 6 coleman tanks since Jan...
) and have used thicker oiled tanks, just not as much oil as I would if I used lighter weight for pistols, for everything from Tornados to 40mm to smaller grenades to GBBs.
No harm done...but Tornados work better with heavier oil...everything else works better with lighter oil.
Otherwise...just give it to someone you next do a trade/deal with as a freebie extra