Mobil heat transfer oil (Mobiltherm) is a high-performance products for the closed indirect heating installations. They consist of highly refined base oil formulated with thermal cracking and chemical oxidation performance. Heat transfer efficiency of the product is good, its excellent viscosity characteristics to make it in startup and operating temperature can be easily pumped. As they have in the recommended operating temperature, thermal cracking performance, the oil's flash point in use will not significantly reduced. Mobil heat transfer oil (Mobiltherm) products, good thermal stability, extremely long life, and will not appear in the use of fouling or viscosity increase. This series also showed a special heating and heat transfer characteristics, heat more quickly. Mobil heat transfer oil (Mobiltherm) recommended for a variety of industrial processes and open the cold closed indirect heating and cooling the oil seal system. 
 Applications 
 Mobil heat transfer oil (Mobiltherm) 603, and Mobil Oil Heat (Mobiltherm) 605 devices can be used for open and closed, but the average body temperature of the oil should be shown in the table below the minimum shutdown temperature range and temperature of not less than -6 o C . Specific range of applications and recommendations are as follows: 
 Mobil heat transfer oil (Mobiltherm) 603 Mobil heat transfer oil (Mobiltherm) 605 
 Closed system -6 o C ~ 285 o C -6 o C ~ 315 o C 
 Open Systems -6 o C ~ 150 o C -6 o C ~ 180 o C 
 In the bulk oil temperature does not exceed the maximum temperature shown in the table and atmospheric pressure in various industrial processes running with cold oil sealed closed indirect heating and cooling systems. 
 Open system, but the average body temperature of the oil must not exceed the maximum temperature shown in the table. 
 Typical properties 
 Mobil heat transfer oil (Mobiltherm) 600 Series 603 605 
 Viscosity, ASTM D 445 
 cSt @ 40 o C 20.2 30.4 
 cSt @ 100 o C 4.2 5.4 
 Pour Point, o C, ASTM D 97 -6 -6 
 Flash Point, o C, ASTM D 92 190 230 
 Density @ 15 o C kg / l, ASTM D