Disposal of Used Oil Filters

The EPA regulates used oil, fuel and coolant filters under the Resource Conservation and Recovery Act (RCRA) but with a specific exemption. Here's a breakdown of the key points:

General RCRA Classification: Used filters, if not properly drained of their contents, can be classified as hazardous waste under RCRA due to the contained fluids.

Exemption for Properly Drained Filters: The EPA provides an exemption for used filters that are not mixed with other listed hazardous wastes. This exemption applies if the filters are hot-drained using one of these methods:

  • Puncturing and hot-draining: This involves carefully puncturing the filter to allow the oil to drain out while the engine is still warm.

  • Hot-draining and crushing: Similar to puncturing, but the filter is crushed after draining to squeeze out any remaining oil.

  • Dismantling and hot-draining: This involves taking the filter apart and draining the oil while it's warm.

  • Equivalent hot-draining method: Any other method approved by the EPA that effectively removes the oil from the filter.

Once properly drained, the used oil filter can be disposed of as a non-hazardous solid waste. This means it can be recycled with scrap metal or disposed of in a landfill that accepts non-hazardous solid waste (check with your local regulations for specific landfill guidelines).

Here are some additional points to consider:

  • Importance of Proper Drainage: The exemption hinges on removing most of the oil from the filter. Ensure the filter drains completely for an extended period (ideally 12-24 hours).

  • Documentation (Optional): While not always required, it's helpful to maintain documentation (receipts or records) of your used oil filter disposal practices, especially if you generate large volumes of used oil filters.

  • Consult Local Regulations: Even with the EPA exemption, some states or localities might have additional regulations regarding used oil filter disposal.

Here are some resources for further information: