What are the differences between platinum and iridium spark plugs?

[ReedDella]

Compared to platinum spark plugs, iridium spark plugs offer slightly better performance. Here are the specific differences between the two: 1. Performance differences: Iridium spark plugs have a higher melting point, allowing the electrodes to be made thinner and more focused. Compared to platinum spark plugs, iridium spark plugs perform slightly better. Platinum spark plugs have a melting point slightly lower than iridium and are priced at half the cost of iridium spark plugs, offering relatively better cost performance. 2. Stability differences: Under the same specifications, the performance of spark plugs only differs in electrode material. The main distinctions lie in lifespan and stability. In harsh environments, iridium spark plugs are more pressure-resistant and stable than platinum ones. However, iridium and platinum spark plugs from different brands and specifications cannot be directly compared. For example, platinum spark plugs installed in Mercedes-Benz vehicles will undoubtedly outperform mainstream iridium spark plugs in the market in terms of performance and stability.