Recommended at my last oil change at 40K
Should power steering fluid and brake fluid be flushed? on 2005 Dodge Ram 2500
Preventive maintenance is never a bad thing. Flushing helps ensure that build-up doesn't cause blockages or sludge inside the lines. Is it needed? Not always and at 40k it may be okay. Decision is yours to have this done now but, you can probably wait for now. Age of vehicle is as important as mileage.