For washing efficiency is very high, after installation, I recommend your guide to the 2000km the first time oil change.When inserted in the poor maintenance vehicle you do not have the oil change for a long period of time, because it washed up stubborn sludge of the piston ring, oil leak may occur. Please noteResult of product performance verification test, we recommended to use both the "active coolant effector".
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I bought it after hearing the reputation. My car is a Toyota car but I believe that it is quite old so I bought it because it was effective. (Although it is stated as for motorcycle, but with self-responsibility) I felt it was quiet after wearing it for a while.