How to Dispose of Motor Oil
Used motor oil is the easiest hazardous item on this site to get rid of properly: AutoZone, O'Reilly, Advance Auto Parts and NAPA all take it free, usually up to five gallons per visit, no purchase needed. It takes ten minutes and it's the most reliably free takeback in the entire waste stream.
Short answer: pour it into a sealed container, take it to any auto parts store, and take the old filter with you.
Why it matters more than most items
Used motor oil doesn't wear out — it gets dirty. It can be re-refined into new lubricating oil essentially indefinitely, which is why the collection network exists and why it's free to you: the oil has value.
The harm side is stark. A single gallon of used oil can contaminate a very large volume of fresh water, and used oil carries heavy metals and combustion by-products picked up from the engine that fresh oil doesn't. It's the difference between a nuisance and a genuine pollutant.
Where to take it — all free
- Auto parts stores — AutoZone, O'Reilly, Advance, NAPA. Typically up to five gallons per visit, no purchase required. The most convenient option for most people.
- Quick-lube and service shops — many accept DIY oil, though some charge a small fee or limit it to customers.
- County household hazardous waste sites — always accept it, usually alongside filters and antifreeze.
- Some municipal recycling centres have oil collection tanks.
Call ahead if you're bringing more than about five gallons, or if the oil is mixed with anything.
Getting it there
- Use a clean, sealable container. The empty jugs your new oil came in are ideal — they're designed for it and clearly labelled.
- Don't use milk jugs or drink bottles. They degrade, they leak, and an unlabelled bottle of dark liquid in a garage is a genuine poisoning risk.
- Label it if the container isn't already marked.
- Keep it upright and transport it in a tub or tray. Oil in a car boot is a problem you only make once.
The one thing that ruins it
Never mix used motor oil with anything else. Not antifreeze, not brake fluid, not petrol, not solvent, not water.
Clean used oil is a valuable feedstock for re-refining. Contaminated oil becomes hazardous waste that costs money to destroy — so collection points will often reject a container they suspect is mixed, and they can usually tell.
If you have already mixed it, say so when you arrive rather than hoping. Take it to a household hazardous waste site instead, where mixed waste is expected.
Oil filters — don't forget them
A used oil filter holds a surprising amount of residual oil, and it's steel, so it's recyclable on both counts.
- Drain it — puncture the dome and leave it upside down over your drain pan overnight. It'll release more than you expect.
- Bag it and take it with the oil.
Most auto parts stores that accept oil accept filters too. Some scrap yards take drained filters as steel. Never bin an undrained filter.
Other automotive fluids
| Fluid | Where | Notes |
|---|---|---|
| Motor oil | Auto parts store | Free, up to ~5 gal |
| Oil filters | Auto parts store | Drain first |
| Antifreeze / coolant | HHW site, some shops | ⚠️ Sweet-tasting and highly toxic to pets |
| Transmission fluid | Often with used oil — ask | Keep separate unless told otherwise |
| Brake fluid | HHW site | Don't mix with oil |
| Petrol / diesel | HHW site | Never in a drain or on the ground |
| Car batteries | Auto parts store | Free, often a core refund |
Antifreeze deserves a specific warning. Ethylene glycol tastes sweet and is lethal to dogs and cats in small quantities. Clean spills immediately and completely, and never leave a container open in a garage.
Things people genuinely still do
- Pouring it down a drain — contaminates water treatment; via storm drains it goes straight to a watercourse
- Pouring it on the ground or on a driveway — it reaches groundwater
- Using it for weed control or dust suppression — illegal in most places and actively harmful
- Burning it — illegal outside properly permitted waste-oil heaters
- Putting it in household waste — it leaks in the truck
Common questions
Does AutoZone take used oil for free?
Yes, as do O'Reilly, Advance and NAPA — typically up to five gallons per visit, with no purchase required. Individual stores can vary, so call if you're going out of your way.
Can I take oil in any container?
It needs to be clean, sealable and preferably labelled. The original oil jugs are best. Avoid food and drink containers.
What if my oil is mixed with antifreeze?
Take it to a household hazardous waste site and tell them. Auto parts stores generally can't accept contaminated oil because it ruins the re-refining stream.
Is used motor oil worth anything?
To collectors, yes — that's why they take it free. To you, no; nobody pays households for small quantities.
What about cooking oil?
Completely different stream. Small amounts can go in household waste once solidified or absorbed. Larger amounts are recyclable into biodiesel — many councils and some restaurants have collection points. Never pour it down a drain; it's a major cause of sewer blockages.
Related
- How to dispose of batteries — including car batteries
- How to dispose of tires
- Who takes your old stuff for free
Retailer acceptance limits and policies vary by location and change. County hazardous waste provision varies. Confirm before travelling with large quantities. Last verified August 2026.