text: yaar,kya tumhe pata hai ki engine air filter ko kab change karna chahiye, kyunki mujhe lagta hai mere car ki mileage thodi kam ho gayi hai?engine air filter har 12,000 se 15,000 km par change karna chahiye, agar tuhe mileage mein kami mehsoos ho rahi hai toh zaroor check karna chahiye!