Had my '07 Accord which is going off warranty later this month in to the local dealer this morning for routine maintenance (A-1 level according to the dash display indicator). After declining all the specially formulated lotions, potions and additives they "strongly recommend", I settled into a chair in the customer lounge for the advertised 45 minutes or less. The service adviser/weasel came in after about 25 minutes, sat down gently beside me and in a serious voice, asked when was the last time I changed the cabin air filter. His tone was similar to my doctor inquiring last week about the date of my last colonoscopy and prostate exam. I sheepishly admitted the filter had never been changed and he mentioned that they were running a springtime special of only to change it. I said that seemed a lot of money to change a filter and he explained that it was a special filter in a very difficult location that took a lot of technician time. Skeptic that I am, I declined the service. Besides which, the cabin ventilation is just fine in my car anyway. While they finished up the car, I went online on my smart phone and found a YouTube video of a 13 year old kid showing how to change the Accord filter yourself in less than 5 minutes with no tools. So on the way home, I picked up a high quality name brand (Purolator) cabin filter for at the AutoZone and popped it in. Took me about two minutes. Dealers!