The EPA recommends oil filters be hot-drained for ________ hours before disposal.

The recommended duration for hot-draining oil filters before disposal is typically set at 12 hours. This time frame allows for the effective removal of residual oil, which is important for both environmental protection and compliance with waste disposal regulations. By allowing the filters to drain for this amount of time, you significantly reduce the volume of hazardous waste being disposed of, thus minimizing the potential for soil and water contamination.

Hot-draining helps ensure that the oil filter is less likely to leak oil when thrown away, making the disposal process safer and more environmentally friendly. The recommendation aligns with best practices in waste management, promoting the efficient recycling and processing of used oil filters while adhering to the guidelines set forth by the Environmental Protection Agency (EPA).