Type TO-4/C4 SWEPCO 714 Hydraulic Transmission Fluid is a high performance multi-service lubricant formulated to deliver unsurpassed performance in the widest possible range of applications in mining, construction, mass transit, trucking, marine, agri-business and municipal services. SWEPCO's superior blend of base stocks and advanced additive chemistry provide unsurpassed, extended drain protection from the most common problems associated with automatic transmissions and drive train components... including poor shift quality, power robbing overheating and high temperature oxidation, performance robbing varnish and deposit formation, costly rust and component wear.