If the car you want to maintain, and also had insurance, and intend to buy their own oil change, now using Castrol, Mobil see others in gold, and he is ready to try it, so the question is, for different brands of engine oil to be cleaned it? The following is said on this issue: in theory is needed, because after all the different brands, we have reason to believe that the oil component will be biased, then it may cause performance degradation after oil mixed to impact on engine life. It says that under the theory of the case, the reality is what? Reality, various brands of oil, especially high-end brand of oil for other oil getting better and better compatibility, such as Mobil 1, semi-synthetic oil and other synthetic oil is fully compatible with conventional oil. So you do not need to switch to a different brand of clean engine oil. Although no cleaning, but switch to a different brand of oil on the engine, or some impact, then how can we minimize the impact of it? Here we need to do the following steps: 1, to ensure genuine machine filter, but also easy to use legitimate; 2, the old oil as much as possible, put a clean, specific practices are as follows: a, the old oil, put a clean, put the oil when let master the high pressure air is blown into the oil filler opening, try to blow residual used oil from the oil pan and clean the inside; b, a small amount of new oil, such as adding new oil 1/3 idling for about 30 seconds to release; c, Fill new oil; 3, this is very important, it is the first oil change interval is shorter, such as the original is 10000KM an oil change, new oil first exchange of best 7000-9000KM to replace, from 10000KM secondary resumed normal replacement; summary Generally, mineral oil without cleaning the oil-for minerals; synthetic mineral oil-for no cleaning; synthetic oil change is best cleaned under mineral oil, then do not wash too lazy lacks something, according to the above steps do Haojiu Hang. We'll have friends, then how can there be so squeamish car, like us, eat rice at noon, at night to eat noodles with gastric lavage it? As long as the good oil, filter good to OK! Tip: finally had to note, do not frequently switch between different oil back and forth, generally fixed a brand is the best way of maintenance.