Crude Oil such as petrol, diesel, etc shouldn’t be dumped underground or left in water.
People who change their own motor oil, the only legal way to dispose of the dirty oil is to place it in a clean, leak-proof container with a tight lid, such as an empty milk jug. It should never be mixed with antifreeze, solvents, bleach, or other substances. The used oil should then be taken to a registered collection center. Most quick lube service centers, such a Jiffy Lube, Quick Lube, Wal-mart Tire and Lube Express, and Auto Zone, accept used motor oil for recycling.
The above picture shows some recycling tips 1. To let the oil cool after cooking, pour in a disposable container (recommended to solidify or freeze ) and throw it into the trash. 2. Reuse and Recycle 3. DO NOT pour into the garbage can directly, nor into sink nor into the toilet.
Reuse and Recycle: cool the used cooking oil, filter it using a clean cloth or filter, and pour it into a clean container with a lid(airtight if available).
or else you can also boil some starch or raw chopped potatoes(don’t eat after use) allow it to cool and filter the oil and throw away the starch/potatoes using a disposable container.
You can use the used cooking oil for maximum of 5 weeks or before it becomes rancid, it has to get disposed of.
There are services to collect used cooking oil from restaurants and elsewhere. This oil is then turned into biofuel.
You can also pour used organic oil (like coconut oil, olive oil, mustard oil) out on the base of a tree; microbes will break it down and will act as terrific fertilizer.