www.austintexas.gov/shadetreemechanic The Pollution Hotline gets more than a thousand pollution complaints per year - nearly 20% which are automotive related. The Shade Tree Mechanic program is designed to reduce pollution commonly caused by home car repair. Visit the webpage or call 512-974-2550 to request a free onsite evaluation of your car care practices to become an official "Shade Tree Mechanic" and to get a free oil change bucket. Remember to always check your vehicle's manual before doing any work.