Ok I hope youre kidding about changing the fluid in your Power Steering. For one it doesnt have a filter so the pump pushing little chunks of deposits and sludge through the lines, putting stress on the pump and ultimately could and probably will lead to needing the pump replaced. $75-$150 if you can do it yourself, $200-$300+ if not. Luckily it happened to my Subaru and I could do it myself. Paid $75 online. If youre talking about changing from winter air to summer air...that one cracks me up every time. And 80% of the customers either get confused or believe me when I tell them it's a service, only $24.99...