Some gas stations have recently become popular to wash cars for free when the fuel is over 2. What's the catch?

It is an acknowledged fact that the oil price in private gas stations is cheap.

There is no guarantee as to whether there is any problem with the oil in private gas stations. Because private gas stations are operated by individuals, unlike PetroChina and Sinopec, which have a strict management system, they may also encounter some gas stations that mix water with oil.

However, it can be guaranteed that there is no problem with the crude oil purchased by gas stations, because only PetroChina and Sinopec are qualified to produce gasoline and diesel in China, so no matter which gas station on the market, the source of gasoline they sell is two barrels of oil, so there is definitely no problem with the purchased gasoline. The reason why private gas stations have cheap oil prices mainly lies in their cost control. Because private gas stations have fewer personnel, smaller scale and less geographical advantages than two barrels of oil, their cost is much lower than that of two barrels of oil. Private gas stations are also more flexible in purchasing gasoline, so they can choose whether to buy oil from PetroChina or Sinopec according to the market conditions. Moreover, buying oil is as negotiable as selling goods, so private gas stations can control the cost to a low level. In addition, because private gas stations have no brand effect,

they can only take the route of "small profits but quick turnover", and then increase the stickiness of customers by giving away services such as free car washing. Therefore, don't look at private gas stations that are cheap and give free car washes. In fact, their profits are still very considerable. Therefore, there is no problem with gasoline in private gas stations in essence, but if you choose to refuel at private gas stations, you must choose a gas station with a good reputation, or you will be cheated.