Auto Fluids Illegal in Garbage/Recycling & Drains Hazardous Waste The San Mateo County Health Department offers multiple options for the safe disposal of auto fluids. Curbside collection of used motor oil & filters is available to residents of single-family homes. Contain used motor oil in original or other sturdy and clearly labeled jug with screw-top lid. Jugs must be 1-gallon or smaller. Contain used oil filters in clear zip-top bag. Place oil jugs and filter bags next to your blue recycling cart on collection day. Limit of 5 gallons/filters per collection day. All San Mateo County residents can recycle used motor oil & filters, and antifreeze at Blue Line Transfer, Inc. There is a limit of 10 gallons/filters per day. Original or other sturdy and clearly labeled containers must be used. Fluids cannot be mixed. Lids must be secure. There is no charge for disposal if no other waste items are disposed during same trip. Never Dump Down the Drain Auto fluids, such as brake fluid and motor oil, can contaminate lakes and rivers, so never dump them in the trash or down the drain. Instead, dispose of them as hazardous waste.