Skip to Main Content
Close Icon

Main Menu

THERMO GARD

  • Base oil technology: Mineral
  • Viscosity: 22-108
  • Viscosity Index: 102-117

AMSOIL Industrial THERMO GARD Heat-Transfer Oil is designed specifically for use in cooling and indirect heat-transfer systems. It delivers exceptional resistance to mechanical wear and thermal oxidation, while providing excellent heat-transfer efficiency in both open and closed heat-transfer systems. THERMO GARD is noncorrosive to ferrous and yellow-metal components.

  • Resists wear to protect equipment. 
  • Detergent additives control deposits and keep systems clean. 
  • High level of filterability.
  • Low pour point to ensure components are protected in low temperature environments.
  • High flash point for improved performance in high temperatures.
  • Excellent thermal and oxidative stability for long service life.

Typical Technical Properties*

AMSOIL Industrial THERMO GARD Heat-Transfer Oil

Test

110

250

500

Viscosity, cSt @ 40°C

22

51

108

Viscosity, cSt @ 100°C

4.4

7.8

12.1

Viscosity Index

106

117

102

Flash Point, COC °F

385

435

505

Open Bulk Maximum, °C

150

180

250

Closed Bulk Maximum, °C

320

340

350

Copper Corrosion, 3 hrs @ 100°C

1a

1a

1a

API Gravity (60°F)

32.3

30.8

29.9

Specific Gravity @ 60°F

0.864

0.872

0.877

*Technical properties are general characteristics of the product and not manufacturing specifications. Variations that do not affect product performance should be expected. Product formulations are subject to change without notice. Customers are responsible for determining product suitability for use with their equipment.