How to Properly Dispose of Used Automotive Fluids

For automotive hobbyists and DIYers, disposing of used fluids can be a conundrum. On the one hand, no one really wants compromise the health and wellness of their own land or community. However, they have to go somewhere, and sometimes making them go anywhere is the only priority. As a kid in the ‘70s, I witnessed neighbors pour their drain pans into the storm sewer assuming it would magically go “away,” wherever that was.

Modern automotive system are like a cocktail bar serving up petroleum, silicone, glycol, and other natural and synthetic fluids. It’s crucial for both environmental protection and personal safety that we ensure they go “away” correctly. Here’s a guide on how to responsibly dispose of various automotive fluids, including gasoline, diesel fuel, engine coolant, brake fluid, automatic transmission fluid, power steering fluid, and gear lube.

Disclaimer: Disposal regulations can vary significantly depending on federal, state, and local laws. It is the responsibility of the reader to ensure compliance with all applicable regulations in their area. Always consult with local environmental protection agencies or waste management authorities for specific disposal guidelines and requirements. This article does not constitute legal advice and should not be used as a substitute for professional consultation.

General Tips

Avoid mixing – Do not mix different types of automotive fluids. Mixing can make recycling difficult and sometimes dangerous. Even a small amount of gasoline mixed in with recyclable motor oil can contaminate an entire batch, making it non-recyclable.

Label containers – Clearly label all containers with the type of fluid they contain. Mark them as “used” to prevent accidentally mixing them with new fluids in the future.

Check local regulations – Disposal regulations can vary, so always check with your local waste management authority for specific guidelines and facilities. Many communities conduct regular household hazard waste collections throughout the year. Check in advance to see what fluids are accepted and what requirement

Safety first – Wear appropriate protective gear when handling and transporting used automotive fluids. Brake fluid, for instance, can irritate the skin. And we’ve never met anyone who wants to smell like gear lube.

Motor Oil

• Containment – Drain used motor oil into a clean, leak-proof container with a tight lid.
• Recycling – Most auto parts stores and service stations accept used motor oil for recycling.
• Disposal – Never pour motor oil down drains or onto the ground.

Gasoline and Diesel Fuel

• Assess quality – Check if the fuel is contaminated. If it’s still usable, you might be able to mix small amounts with fresh fuel and use it, especially in low-compression, non-precision (i.e., carbureted) combustion engines like lawn and garden equipment.
• Containment – Store used fuel in a clean, approved container and mark clearly to avoid accidentally contaminating good fuel.
• Disposal – Take the fuel to a hazardous waste collection facility or a recycling center that accepts gasoline and diesel. Never pour fuel down drains or onto the ground.

Engine Coolant

• Containment – Collect the used coolant in a sealable, leak-proof container. Ensure it is clearly labeled as “used” to prevent accidental use in the future.
• Recycling – Many automotive shops and recycling centers accept used coolant. Check local regulations and drop-off locations.
• Disposal – Never pour coolant down drains or into the environment, as it contains chemicals that are toxic to humans and wildlife.

Brake Fluid

• Containment – Store used brake fluid in a tightly sealed, clearly labeled container.
• Disposal – Take it to a hazardous waste disposal facility. Some auto parts stores may also accept used brake fluid.
• Caution – Do not mix brake fluid with other automotive fluids, as it can complicate the recycling process.

Automatic Transmission Fluid (ATF)

• Containment – Use a dedicated container for storing used ATF.
• Recycling – Many recycling centers and auto parts stores accept used ATF.
• Disposal – Ensure it is disposed of at a facility that handles hazardous waste to avoid environmental contamination.

Power Steering Fluid

• Containment – Collect power steering fluid in a clearly labeled, sealed container.
• Recycling – Similar to ATF, many places that accept used oil will also take power steering fluid.
• Disposal – Always take it to an appropriate disposal facility to prevent environmental harm.

Gear Lube

• Containment – Store used gear lube in a leak-proof container with a secure lid.
• Recycling – Gear lube can often be recycled with used motor oil. Check with your local recycling center.
• Disposal – Dispose of it at a designated recycling or hazardous waste facility.

By following these guidelines, you can ensure you are disposing of used fluids in a manner that is safe for both the environment and your community. Proper disposal not only helps protect the land, air, and water but also keeps your personal workspace clean and safe.