Garage & Garden ruling
Can transmission fluid go down the drain?
The garage product stays out of the household plumbing. Full stop.
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Sink or drainNo
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Garbage disposalNo
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ToiletNo
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Septic systemNo
01
Why the pipe objects
Transmission fluid is petroleum-based automotive waste and may carry contaminants from vehicle use.
02
Do this instead
Collect it in a leak-proof labeled container and use an auto-fluid recycling or hazardous-waste program.
03
Already did it?
Do not mix it with cleaners, fuel or other fluids. Contain the remaining product and contact your local wastewater or hazardous-waste authority for spill guidance.