It is best not to install gliders, which will not save fuel in a straight line, but also accelerate brake wear and prolong braking distance, which is not good for safety. Gliders can also make the acceleration worse. After a period of use, they will slip, but they will consume more oil. Ordinary cars don't carry that thing.

The sharp sound when running fast should be the reason for the tight gear gap of the new car. Some will gradually disappear with the running-in, and some will not disappear, resulting in howling, but generally will not affect the normal use. The construction of Guowei itself is a brand-name product with poor quality.

It is enough to change the oil twice within 1000 km, and once for 500 km and 1000 km respectively. Changing the oil frequently is good for the engine, but changing it too often can only cause waste.

Be careful not to drive at high speed for a long time during the running-in period, avoid excessive load and acceleration, and drive as smoothly as possible.