[GZ250]

nothing is holy script here. as i said even after a year my spark plug is good and works non stop but its just $3 or so and if it helps the engine and keeps me trouble free why not change. when i changed my air filter it looked almost new but 2 years is enough. i recently had the piston issue in my front (disk) brake. it was stuck and i think as well as the dealership, the brake fluid was the reason and when i took out the old one it was not colorless type but orangish. i have seen people don't care about air filters in their cars and man at oil change when the technician takes that out it has so much dust and almost black, their cars still run