Review on Synthetic engine oil LIQUI MOLY Special Tec AA 5W-30, 4 l, 3.8 kg, 1 pc by Mateusz Banaszkiewic ᠌

Protection: under the light of a UV flashlight, a dot code is visible on the plugs. But! In the right canisters, collected empty at the service station, shnyaga can be refilled. To exclude this, we weigh cans of oil on a flat kitchen scale with an accuracy of + -1g (+ -5g will also do) - see photo. Forgers with an accuracy of a gram will not be able to re-fill - this is the time. And fake oil - cheap mineral water - has a higher density: the weight of a 4 liter canister will be 100-150 g more, that's two. This can not be attributed to the error of the scales.