Audi A4 does not have an oil dipstick. The oil level is displayed electronically in real-time. Press the 'car' button and select 'Maintenance' to find the oil level option for viewing. The proper use of an oil dipstick plays a crucial role in extending the engine's lifespan. More details about the oil dipstick are as follows: 1. The function of the oil dipstick is not only to check the level of engine lubricating oil. Experienced drivers or repair personnel can detect many engine working conditions by inspecting the oil dipstick, thereby maintaining the engine, identifying the causes of faults or accidents promptly, preventing further deterioration of issues, and making quick and accurate judgments based on reliable information. 2. The oil dipstick measures the static height of the oil level, reflecting whether the engine's oil volume is within a reasonable range. 3. A conventional oil dipstick will have clear upper and lower limits. Simply ensure the measured oil level is between these two marks. Ideally, the level should be in the middle. It's important to note that more oil is not necessarily better. A higher oil level actually increases engine resistance (since the crankshaft continuously agitates the oil in the oil pan for splash lubrication). Under ideal conditions, keeping the oil level slightly below the middle position minimizes engine resistance and fuel consumption while maintaining stable lubrication performance.
