[header] How to clean up oil spills in a garage [title] Absorb the surface oil with granular coconut coir (coconut husk-a far safer alternative to the usual application; kitty litter/clay). [step] Pour around the oil spill to stop it from spreading further, and on top of the oil. Use a brush to move around the coconut coir and soak up all the oil. 
[substeps] Check the label for health and safety information before using any oil absorbent. Some of these materials may be dangerous to inhale.