Hi All I have 2016 CPO Soul that I will be bringing it in for maintenance, Oil Change and Alignment I am at 19500 miles I drive over 1000 a month so i am doing 4000 miles oil change at the dealer. The dealer said I am due for an Engine Air FIlter that I was quoted at $90 that is ridiculously overpriced and cabin air filter I think was like $70. I am considering going to pepboys that will charge 70 for both. I was hoping to do all maintenance at the dealer to avoid any warranty disputes. When should I change the engine air filter and would eb OK to go else where without warranty issues? Also would delaying or changing the cabin air filter void any warranty, that is ridiculously overpriced as well. Your thoughts are appreciated. I don't want to be ripped off by the dealer, I also don't want to void my warranty in any way.