If you've ever tried to steer a modern car or truck while it's powered off ... to push hydraulic power steering fluid through the system. That pressure applies more force to the steering assembly ...

In recent years, electric power steering systems ... One of the keys to making EPAS viable on trucks has been the migration from older recirculating ball steering systems to lower friction ...

It can also be used as power steering fluid in Fords built roughly before ... and ATF+4 is made for the Chrysler family of cars, trucks, and SUVs. Many brands make an ATF labeled specifically ...