Has anyone done a 30/90k service done on their Mazda? My 2005 Mazda 3 sedan hit 90,000 miles and my dealer wants the 30/90k service done on it for $199. Does anyone know if this is necessary? I looked on the Mazda website and pulled the service sheet and attached it to this post. Can anyone tell me if $199 seems right for the service their doing? Thanks.