Auto Fluids Hazardous Waste Utilize the Santa Clara County Household Hazardous Waste Program to dispose of auto fluids. These should never be recycled curbside, put in the garbage or down a drain of any kind. Curbside collection of used motor oil is available for residential homes, townhomes and mobile home parks. Find out how to arrange a used motor oil pickup. 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.