Iridium Spark Plugs for Car: Enhancing Performance and Efficiency
Platinum spark plugs also offer superior electrical conductivity compared to other materials
Moreover, these advanced spark plugs contribute to improved fuel economy

The shaft on which the oil seal is mounted has to be ground to a rough surface finish. The shaft also should be hardened to prevent grooves forming on the shaft when the pressure is exerted by the spring on the seal. The area where the seal is fitted also has to be ground to prevent grooves that tend to wear out the lip of the oil seal faster than normal.