1. Do not oil tire bolts and nuts
When caring for wheels, a small number of private car owners ingeniously apply lubricating oil to wheel bolts and nuts to prevent wheel bolts and nuts from rusting. Little do they know that this practice is not only wrong, but also creates certain hidden dangers for driving safety.
After bolts and nuts are tightened, they self-lock with each other. After applying lubricating oil, self-locking ratio between them becomes smaller, and self-locking performance is reduced. When vehicle is moving at high speed, bolts and nuts are easily loosened or even fall off, causing traffic accidents.
2. Do not wash inside of the body with water
Summer has come, and it is customary for private car owners to wash body with water, wiping it with a rag. Here I would like to remind private car owners that it is better not to wash interior of car with water.
Because bottom of cab floor rubber is not a "flat river", design requirements require multiple grooves and through holes under cab floor rubber. After washing with water, it either settles in groove and is not easy to dry, or flows from through hole onto gearbox and other components, causing rust. In particular, cars with better sealing performance cannot directly wash inside of body with water. The correct way is to wipe with a damp cloth, but avoid water accumulation.
3. Do not mix different brands of coolants
Everyone knows that when engine coolant is low, it needs to be topped up on time, but have you used different brands of coolant together? If yes, then I advise you to drain coolant as soon as possible and add same brand of coolant again liquid.
Because chemical properties of different brands of coolants can vary greatly, for example, antiseptics effective on ferrous metals often have a corrosive effect on aluminum products, antiseptics suitable for aluminum alloys are harmful to ferroalloys. Since different brands of coolants use different preservatives, they should not be mixed.
4. Do not step on gas pedal when starting EFI car
Many drivers have a habit of pressing gas pedal several times before starting engine, especially when starting a cold car in winter. But this starting method is not suitable for vehicles with EFI.
An engine equipped with an electronic fuel injection device differs from a conventional carburetor engine in that its fuel injection control device can automatically adjust fuel supply according to temperature and engine operating conditions so that engine can start smoothly. i.e. with a cold engine. When starting, fuel injection control device can automatically increase fuel supply. Therefore, when starting engine of an EFI car, there is no need to depress accelerator pedal, let alone continuously depress accelerator pedal before starting, otherwise the engine will not start well.