Also it's a user-maintenance thing. One more thing to refill on top of your windshield wiper fluid. I forget if it was VW or Mercedes, but one of them branded

Also it's a user-maintenance thing. One more thing to refill on top of your windshield wiper fluid. I forget if it was VW or Mercedes, but one of them branded theirs as "blue-tec" or something that doesn't sound like you're handling piss bottles. Let the mechanic worry about that.