Due to increasingly stringent emission standards, in order to meet the stringent standards, car companies need to increase the amount of precious metals used in catalytic converters.Therefore, the price of precious metals used to make catalysts has also increased in recent years, resulting in increasingly expensive finished three-way catalytic converters. The cost of replacing one is as low as several thousand yuan, and as high as tens of thousands of yuan, which is a significant expense.

How should ordinary car owners protect their car's three-way catalyst? By following the following steps, they can greatly protect their car's three-way catalyst.

1. Do not use gasoline and engine oil of unguaranteed quality for cheap.

2. If the manufacturer's user manual requires regular use of gasoline additives, it is best to follow the instructions, especially for direct injection vehicles, to prevent carbon buildup and resulting worsening of combustion, which can increase particulate matter in the exhaust.

4. If possible, run on the highway regularly.

5. Avoid the backstop to prevent the three-way catalyst from being damaged by impact

6. Try not to wade through deep water, as the temperature of the three-way catalyst is very high when it is working.  If it comes into contact with water, the instantaneous thermal expansion and contraction may cause damage to the three-way catalyst.

7. Try not to idle for a long time.