For this question you asked, I remind you to be cautious when using any vehicle additives! No matter how good the additive is, the wear and tear of the vehicle is inevitable, and it can only delay the wear and tear at most. If these additives are so magical, the repair shop will be closed! As far as I know, the lubricating oil passage will be blocked after the additive is used in the car that has been running for a long time. Please be careful. G 17 fuel additive is provided by Volkswagen manufacturer and needs to be added according to the actual mileage and usage of your car. The effect is still there, but it is best to clean the oil circuit and continue to use it. Your car has also run 40,000 kilometers, so it's time to thoroughly check and clean up the carbon deposits inside the throttle and engine. I hope my answer is helpful to you.
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