Are you referring to engine oil? Those are not related. I suspect your truck uses the hydro-boost power brake system. That runs on pressurized power steering fluid. The best suspect is a worn power steering pump. If you are asking if this can be caused by low power steering fluid, that is an integral part of the system, so of course it cannot work if the level is low enough that air is being sucked in.
Wednesday, July 5th, 2017 AT 11:14 AM