How to dispose of motor oil
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Used motor oil
Every auto-parts store accepts up to 5 gallons of used oil per day per resident, free of charge. Pour the oil into a clean, sealable container (the original oil jug works). Do not mix it with antifreeze, brake fluid, or solvents, because that contaminates the recycling stream.
Used oil filters
A used oil filter holds about 8 oz of residual oil and counts as hazardous waste. Most auto-parts retailers accept them along with the oil. Drain the filter for 24 hours over a pan first. The drained oil goes in your collection jug.
Transmission + power-steering fluid
These are similar to motor oil chemically, but they need to be separated for recycling. County HHW takes them, and some auto-parts stores do too (call ahead). Do not mix them with motor oil.
Antifreeze (coolant)
Ethylene-glycol antifreeze is toxic to pets and wildlife (the sweet taste attracts them). HHW and many auto-parts retailers accept used antifreeze for recycling. The propylene-glycol (pet-safe) variant is also hazardous in concentration. Recycle it the same way.
Brake fluid + solvents
Brake fluid, carb cleaner, and engine degreaser are flammable or corrosive and do not fit the auto-store take-back program. County HHW is the right answer.
Step-by-step
- 1. Use a clean container. The original oil jug, a gallon milk jug, or a dedicated oil-collection bottle. Never mix the oil with other fluids.
- 2. Drain filters separately. Twenty-four hours over a pan gets most of the residual oil out. The drained oil goes in your collection jug.
- 3. Cap tightly. Transport the jug upright, ideally inside a leak-proof secondary container (a cardboard box with a trash bag liner works).
- 4. Drop at any auto-parts retailer. AutoZone, O'Reilly, Advance Auto, or NAPA. Up to 5 gallons per visit. Free.
- 5. Look up your local option. Try /check for the verified nearest retailer and HHW.
Frequently asked
Where can I dispose of used motor oil?
Every U.S. auto-parts retailer that sells oil is required by federal law (40 CFR 279) to accept up to 5 gallons of used oil per resident per day, free of charge. AutoZone, O'Reilly, Advance Auto, and NAPA all participate. County HHW also accepts unlimited quantities.
Is it illegal to throw motor oil in the trash?
Yes, federally. The EPA Used Oil Management Standards (40 CFR 279) classify used motor oil as a recyclable material that cannot be landfilled, poured down drains, or burned. Penalties for illegal dumping vary by state but can reach $25,000+ per violation.
Can I mix oil filters with the used oil?
Do not mix them in the same container. Drain the filter for 24 hours over a pan first, pour the drained oil into your collection jug, then take the (mostly drained) filter to the same auto-parts store. Most retailers accept oil filters along with the oil.
What about cooking oil (used vegetable oil)?
Different rules. Cooking oil is not hazardous, but it can clog drains and damage sewage systems. Small amounts can solidify in the trash (mix them with cat litter or paper towels). Larger amounts often have grease-collection programs (check your city). Never pour it down the drain.
Can I burn used motor oil in a waste-oil furnace?
Only if you own a certified used-oil-burning appliance (some garages and farms have them). For residential use, no. Uncertified burning releases hazardous compounds. Take the oil to a retailer or HHW instead.
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