Board Thread:Game Discussion/@comment-35553674-20180513161347/@comment-34676248-20180514181246

You never spend your for hiring engineer or RS manager, only Fame agent when you are having a race that you are going to win and the fame amount of the race is beyond break even point. More read here: http://rr3.wikia.com/wiki/Thread:31214?useskin=oasis

Also never repair, speed up anything with Gold. RS is unlimited resource, especially latter in game, when you have trouble to spend it unlike Gold. Preserve every Gold coin, you will need it.