After changing oil car got a really bad tick in it at lower rpms. @ idle cruise if I gave it a little as or held the gas steady at low rpms there was a pretty bad tick coming from the driver side of the motor. I took it in on Thursday and the car was ticking the worst right there on the ramp (thanks god cause sometimes cars decide to act perfect when u get to the dealer). They had 3 service writers and 3 techs out there looking at my car trying to figure it out. All of them said they have never heard of that before. Car drives great and has all its power still but I can hear the tick over my exhaust which is pretty loud. The service writer told me to give him some time to figure it out that they were gonna get it taken care of for me.