Motor Oil Saver Part No. 20320

I recently bought the product in subject field and use in my vehicle for burning oil issue. As per product instruction one bottle is enough for up to 5 liters of motor oil. My question by the time the product kicks in ( sealing first takes effect after about 600-800 km (400-500 miles -> this is what it says on webpage ).) it already burnt the oil saver along with engine oil. What is the guideline in this case ? Do I need to add more Motor Oil Saver after 600~800 km (400-500 miles). In my case even after 800 KM my car is still burning oil.   Please advise. BTW, I am residing in Canada and, using it in my vehicle Honda Odyssey 2008 EXL VCM engine that is known to burn engine OIL (I recently disable the VCM using muzzlar device (a resister)) but damage is already done that I am trying to fix using your product. I have added the oil saver after recent engine oil and filter change. As per my research my car is burning engine oil due to valve seals or gummed up piston ring or combination of both. thanks.