Blade Hunter..check the Service book for the list of jobs to be done on that particular service, if the Injector service is not there, as recommended by Toyota they shouldn't have done it . $50 gets you nothing at a Dealer..sounds like they just slapped a bottle of Wynns "petrol conditioner" in your tank, like the Berwick dealer did to my mate..he was spewin, they polluted a full tank of Optimax with it, there's no justification to it just a quick grab for cash, added 10% to his bill. If U pay the big bucks for the gen Toyota Service at the dealer U should ONLY get genuine toyota parts and products used.. end of story. Who was the dealer U used..?? Thought for the day....too many "don't know" housewives, and "couldn't care less" reps with company cars have allowed this attitude by dealers to develop and so they just treat us the same....like we're know nothing dickheads.