J JRX8 New member Mar 14, 2011 #1 I have a 2004 Mazda RX8 auto on how many miles do you have to change the sparks plug. How often what the price range dealer or what's the best for perfomance.
I have a 2004 Mazda RX8 auto on how many miles do you have to change the sparks plug. How often what the price range dealer or what's the best for perfomance.