- Engs offers pre-approvals and credit lines for equipment financing on all new & used Class 8 and medium duty power units and all commercial trailers. Contract lengths of 24-84 months on $10,000 to $5,000,000 transactions with fully amortized or balloon loan options and flexible down payment requirements. Engs Commercial Finance Co, (ECF) is a leading lease/finance source for dealers and operators of new and used tractors, trailers and related equipment. Since 1952, ECF has financed over $1 Billon in equipment to help small and mid-sized operators upgrade and grow their businesses. Visit us at www.engsfinance.com to learn more and apply for our financing programs.