Long-Term Fluid Level Averaging

Based on the IQAN Filter function documentation, it appears the standard Filter is intended for fast signal stabilization and its response depends on cycle time and filter percentage. For a fluid level application, we need to average the level over approximately 6 minutes to reduce false low-level readings while traveling on long ramps. Is the standard Filter function suitable for this kind of long averaging period, or would it be better to implement a custom moving average using sampled values stored in an array/buffer? For example, capturing one filtered level value every 72 seconds and averaging the last 5 samples to achieve an approximate 6-minute average.