Good day, my hydropumps have been clapping for some time. A change is simply not worth it, so I bought the additive from Liquid Moly on good luck. But I don’t know how to use it optimally. The instructions on the bottle have no use for me. As I read on the internet, the medium is mixed with the engine oil. The 300ml in the wrong range for 6l engine oil. May mean that my A4 (according to manufacturer 3.5l oil content) is about 120ml additive The oil level is almost on Max. I haven’t overturned anything for half a year. Furthermore, the full effect will only unfold after about 500km. Since I drive almost only short distances, I absolutely have to plan a long distance journey? Short distance means 2x 13km every day through the city. Please don’t take these fuzzy questions badly.