As temperatures drop and the approaching cold months, drivers should pay attention not only to the state of tires, motor oil, and heating systems but also to the fuel level in the reservoir.
While it may seem like a trivial detail, keeping the tank almost empty during winter may cause some problems, especially in low – temperature conditions, and when the vehicle stays for long periods without use.
Many drivers are accustomed to fueling their car only when the reserve signal is on. Others prefer to keep the reservoir partially filled, pushing the supply to the point of need.
During winter, however, vehicle maintenance experts recommend that fuel levels be not allowed to steadily decline to very low levels.
The reasons are mainly related to the possibility of establishing condensation, operating fuel pumps, the risk of water presence in the supply system, and problems caused by temperatures below zero.
Condensation of moisture, one of the factors to consider
One of the most often mentioned reasons for maintaining a reservoir filled during winter is condensation of moisture.
When the reservoir has little fuel, the rest of the space is filled with air. Under certain conditions, temperature changes can result in condensation of moisture present in the air, creating drops of water on the water’s internal surfaces.
In time, if water is collected, it can create problems in the fuel supply system. This is especially important for automobiles that are parked or rarely used.
It should be noted, however, that this phenomenon does not mean that each semiempty reservoir will store dangerous amounts of water. Modern cars have closed ventilation systems and fuel vapor control that limit air exchange with the outside environment.
Fuel water can damage the injection system
The presence of water in the reservoir should not be neglected. If it reaches the fuel supply system, it can cause corruption, filtration problems, and damage to the components of the injection system.
The danger is especially important in diesel engines, which have high – pressure injection systems and require adequate fuel.
Water can be collected into the fuel filter or water distributor if the vehicle is equipped with one. In times when it does not leave in time, it can affect normal engine function and increase maintenance costs.
For this reason, periodic control of fuel filter and supply system is especially important during the cold season.
Why shouldn’t you drive with an almost empty tank?
Another reason is related to the fuel pump. In many modern vehicles, this pump is placed inside the reservoir and uses its own cooling fuel, while lubricating depends on design and type of pump.
When the vehicle is constantly used at very low levels of fuel, the pump may be more exposed to overheating, especially if the fuel supply is cut off or the pump works in inadequate conditions.
This does not mean that holding the reservoir in half of capacity is a condition for normal operating of the pump. The problem is mainly related to the continued use of vehicles at very low levels and the risk of the pump working without sufficient supplies.
Source Layer: Insander