Modern vehicles rely on a host of fluids to send us down the road. Some, like engine oil and coolant, are well-known, while others, like differential fluid, are less-familiar to average motorists.

Electric rod-actuators are replacing fluid power actuators for many high-force applications throughout industry. Tasks once limited to hydraulic and pneumatic cylinders such as pressing, holding, ...

Seeing as many vehicles switched from hydraulic power steering to electric power steering by the mid-2000s, fewer and fewer cars have power-steering fluid anymore. (Only the hydraulic systems use ...