Single Engine company dispatched for a unknown liquid leaking from 55 gal. drums on the side of the Rd. E-05 arrived and sized-up the scene and called for assistance from the HAZMAT Team and E-12( the back-up team. HAZMAT 1 and E-12 arived on the scene and were briefed by the officer on E-05 and researched and developed a plan of action. Two 2 man teams were suited up and made entry to further identify ther product. Second team was for back-up and decon. Unknown product was some form of used motor oil and was turned over to clean-up company. Units on scene for almost 2 hrs. E-05 HAZMAT-1 E-12 and C-02. Also Forsyth County Emergencey Mgt. and resources from other city agencies. agencies.