Had a chat with a fellow car enthusiasts and we were discussing which spark plug is better or the best available in the market? Iridium or the Platinum? Another friend of mine told me it depends on the car, if it's for japanese car then it must be Iridium and if it's for european cars then it must be Platinum. While another one said that the regular stock spark plugs will do coz it's just a waste of money to buy expensive spark plugs. I really do not have an idea whom to believe..
Your comments on these items please..