Oil cooler is vital part of Environmentally Friendly Engine, which reduces Lubricating Oil temperature and maintains Viscosity of Oil. Effective Oil cooling ensures that the oils lubricating properties are maximized to Protect Diesel Engine, when under Load.Maximize Engine Performance and extend Life and Reliability Avoids Expensive and untimely mechanical failure Increases oil changing time thus saves the cost and protects Environment Increases Life of all moving parts. Increases in Fuel Efficiency