Adreol Fleet Turbo CF-4 15W-40 is a premium quality, commercial multipurpose diesel engine oil. It assures outstanding protection against high temperature engine deposits, oil degradation, oil thickening and corrosion resistance. The oil is having excellent shear stability to maintain viscosity under severe, high temperature operations. for more information please visit http://powerlinkoil.com/products-2/adreol-gear-90/