Tips for Leaving Your Car Un-driven for Two Months: Gas and Maintenance Considerations

Heading out on a trip for around two months and planning to leave your car unused? Here's what you need to know about the gas in the tank and other essential maintenance tips to keep your vehicle in good condition.

Gasoline Degradation: A Concern for Un-driven Cars

Yes, you should be concerned about leaving gas in your car for two months, especially if it contains ethanol. Over time, gasoline can degrade and lose its potency, particularly if it's sitting idle. Ethanol-based fuels can absorb moisture quickly, leading to a phenomenon called phase separation. This process occurs when water and ethanol settle at the bottom of the fuel tank, creating a layer that can contaminate the fuel and affect engine performance.

Using Fuel Stabilizers

To combat gasoline degradation, adding fuel stabilizers can be a smart move, especially if you know the car won't be used for an extended period. Fuel stabilizers work by neutralizing water contamination and preventing the gums and varnishes that could form during storage. This helps keep the fuel in a usable condition for a much longer time. Some popular stabilizers also contain detergents that clean the fuel system, which is an added bonus.

Tank Full vs. Empty

The age-old debate: should you keep the gas tank full or empty during extended periods of non-use? Keeping the tank full can help minimize the risk of condensation forming in the tank, which can lead to water mixing with the fuel. However, an empty tank poses its own set of issues, such as the risk of rust formation. Modern cars with electronic fuel injection (EFI) systems have sealed fuel tanks, which can reduce the risk of condensation significantly. Still, it's a good idea to consider the atmospheric conditions and potential condensation in your area.

Battery Maintenance

While the fuel is a significant concern, don't forget about the battery. If the car will be sitting idle for a long time, it's a good idea to disconnect the battery to prevent parasitic drain. Alternatively, using a trickle charger can keep the battery at a consistent charge level. Battery failure is common after extended periods of non-use, and this can leave you stranded.

Tire Pressure and Other Maintenance

Before leaving, another crucial consideration is the tyre pressure. Un-driven cars can develop flat spots on the tyres due to the weight of the car pressing on them. Using a tyre jack or a manual tyre inflation tool can help prevent this. Additionally, inspect the brakes, hoses, and other components that could deteriorate without regular use.

Conclusion

While two months is a relatively manageable period, taking a few preventative measures can help keep your car in good condition. Ensuring that the gas is stable and the battery is charged are crucial steps to take. With proper care, your car can return in excellent condition after your trip.