it can clean the intake valves, combustion chamber deposits, as well as sulfur and phosphorus complexes and various deposits on the surface of oxygen sensor and three-way catalytic converter, unclog the three-way catalytic converter, restore the three-way catalyst activity, and reduce carbon monoxide, hydrocarbon and nitrogen oxide emissions. this product helps the car exhaust test standards, restore engine power and save fuel. this product is not harmful to the three-way catalytic converter and oxygen sensor.
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