1Universal Fit: 5.0L fuel diesel water tank is suitable for parking heaters in electric cars, making it a versatile option for various vehicles. 2Enhanced Protection: The bottom of the tank is designed with 2 raised parts, serving as a protective barrier against abrasion and providing insulation for the fuel inside. 3Practical Parts: Includes a blue tank cover and installation accessories, along with a metal nozzle for connecting to a 1/4 fuel hose, ensuring a perfect application. 4Secure Seal: The tank's cap features a professional sealing design, ensuring a tight fit and preventing oil leakage or the ingress of gas. 5Convenient and Efficient: The 5L integrated oil container with nozzle makes it easy to pour the oil into the car heater, eliminating the need for messy and time consuming oil transfer.