Can you use platinum spark plugs instead of iridium?
Platinum may be harder than copper, but iridium is the hardest among the three, and iridium spark plugs outlast platinum spark plugs by almost twice the mileage. … Platinum spark plugs offer a slightly cheaper but less reliable option if you don’t want to spend as much on iridium spark plugs.
Do I really need iridium spark plugs?
No, you don’t have to use iridium spark plugs. You should be fine with the ones you bought. You should use NGK or Denso iridium though , for two good reasons. They are what came in your vehicle from Toyota and they last for 120,000 miles.
Can I use copper spark plugs instead of iridium?
Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs. In reality, copper has the best performance of all three and the worst longevity.
Which is a better spark plug platinum or iridium?
Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs.