We took the car to a local Toyota dealer and their diagnosis is that all the lines in the car have gone bad from using non Toyota fluids. Brake, motor oil, power steering fluid. Is this something that can happen or am I getting had? I let my father in law take the car so they don’t talk down to me, I look quite young, and don’t have the car nearby to inspect the hoses/lines right now. When we attempted repairs all hoses and lines looked in excellent shape. Again, no leaks on inspection, or on the ground where the car has been sitting.