

That way you're making money off your excess oil, but you still always have some on hand to produce your fuel. You could set one depot to export the oil, and one to use locally. Now say you have two Trade Depots, and both have crude oil storage lots. Let's say you're getting into drilling, and you've plopped an oil refinery to make some fuel. There is a purpose to separate orders for multiple depots as well. Your specialization buildings know to share their goods among all your depots, so if you have two depots and enough production to keep up, both will exchange money every hour, effectively doubling your income for that good. To maximize your income, you'll need multiple trade depots. When placing multiple trade depots, each trade depot has its own separate orders for goods, and each trade depot exchanges goods every 60 minutes. Exporting goods are unaffected, of course.

Regardless of the orders you place on your trade depots and trade ports, there is a hierarchy of orders they'll follow before actually conducting business: The three options are import, export, or use locally (neither import nor export).
#HOW TO MAKE MONEY IN SIMCITY 4 HOW TO#
You'll see a tabbed list of all the goods you're trading in, and can set up individual orders for how to treat that good. Once the appropriate storage lot is placed, simply click your trade depot, then click the “Manage Global Deliveries” button. Because trade depots have a maximum of four storage lots (including the freight storage lot, which you can destroy if you need to), you'll likely want two or more trade depots if you're going all-out for resources. Simply edit your trade depot, add the appropriate storage lots as modules, and you're set. Only the ones for raw materials (raw ore, coal, and crude oil) are available right away. In order to trade in specific goods, you'll need the appropriate storage lots.

This isn't a bug the industrial zones keep the profits, but they pay you back in the form of density upgrades, wealth upgrades, tax increases, more jobs for your residential zones, and otherwise helping your city overall. When the generic freight from industrial zones is shipped, you will not see any of that money.
