Oil Derrick

Oil derricks are used to produce oil which is needed to build most of the basic units in the game including jeeps, tanks, helicopters, rocket trucks and transports. Oil is also used in some higher level units, and alliance boosts.
==Upgrade Information==
Level 	Oil per hour	Health 	Iron required	Money required	Upgrade Time
Level 1 	Unknown 	Unknown	Unknown 	Unknown 	3 seconds
Level 2 	Unknown 	Unknown	Unknown 	Unknown 	30 seconds
Level 3 	Unknown 	Unknown	Unknown 	Unknown 	5 minutes
Level 4 	Unknown 	Unknown	Unknown 	Unknown 	30 minutes
Level 5 	Unknown 	Unknown	Unknown 	Unknown 	3 hours
Level 6 	Unknown 	Unknown	Unknown 	Unknown 	6 hours
Level 7 	Unknown 	Unknown	Unknown 	Unknown 	9 hours
Level 8 	Unknown 	Unknown	Unknown 	Unknown 	Unknown
Level 9 	Unknown 	Unknown	Unknown 	Unknown 	Unknown
Level 10	Unknown 	Unknown	Unknown 	Unknown 	Unknown
Level 11	 	 	 	 	
Level 12	 	 	 	 	
Level 13	 	 	 	 	
Level 14	 	 	 	 	
Level 15	 	 	 	 	
Level 16	 	 	 	 	
Level 17	 	 	 	 	
Level 18	 	 	 	 	
Category:Buildings