Alright, well i'm only level 2 i downloaded 510 respect points and simply bought 1 refinery then used 10 points to buy cash than another refinery then use points again to buy refinery (every refinery bought increases amount gained when using points) so i now have 28 refineries 8 supply depots and my cash flow is 190k every hour and every time i use 10 points to gain cash i gain 764k so this strategy is the best for gaining money if you have any questions feal free to message me.
And if you would kindly add me that would be great!, VRRZRT