Screw that. You didnt request it they didnt offer before hand and now your car is throwing an error light.. Tell me you have it in writing they added this crap to your oil. Now go back to the dealership and ask to talk to the dealer manager. Ask him to explain to you why this happened on a 34k vehicle. Now tell him what are you going to do for me to compensate for any unknown damages that may occur or have occured because of this. Lastly my favorite. Tell him you want an upgrade to a nismo edition or your going to report his dealership to the better business bureau and contact a lawyer.
Just my opinion. (fcukers)