An oil change is inevitable, especially for some models that consume more oil, such as Volkswagen series. In fact, many cans of oil are changed in a year, but these oils are still usable.
The amount of engine oil to replace is determined by engine model, and in any case, excess engine oil is inevitable.
In order not to waste engine oil, when changing engine oil during vehicle maintenance, you can use oil filler so that you can fill oil according to required oil consumption. At present, many repair stations have adopted this oil change method, there will be no waste, it is really not possible to use bulk engine oil to top up, and if only bottled engine oil can be bought, then remaining engine oil is recommended to be used to replace part that is lost in as a result of engine operation. Engine oil stored for a long time should not be used to fill engine oil, but it can be used to lubricate mechanical parts in daily life.
For each maintenance, barrel engine oil is inexhaustible, and remaining amount is filled and placed in trunk. The remaining engine oil is mixed three to four times, which is enough for one maintenance. Or you can save unused engine oil after each oil change. After driving 4000 kilometers, take some of engine oil from dipstick, add remaining engine oil, and change oil after driving 3000 kilometers. Or next maintenance after draining engine oil, first fill a small amount of remaining engine oil into cylinder to flush, drain oil remaining at bottom of cylinder, and then add new engine oil, so that maintenance effect is better.
The above is an introduction to disposal of leftover engine oil. Do you understand it? I hope my exchange can solve your problems. Both