SERVO Therm Thermic Fluid (Heat Transfer Oil) – Medium, Special & Super
SERVOtherm is IndianOil's mineral heat-transfer (thermic) fluid range. IOCL lists three grades — SERVOtherm Medium (systems up to 300 °C), SERVOtherm Special (up to 315 °C) and SERVOtherm Super (bulk oil up to 315 °C). If you are looking for “Servo Therm 32”, one of these three grades is the product you need.
SERVO Therm specifications
| Property | IOCL specification |
|---|---|
| SERVOtherm Medium | For well-designed heat transfer systems up to 300 °C |
| SERVOtherm Special | Low sulphur, low CCR; for well-designed systems up to 315 °C |
| SERVOtherm Super | Additive-treated; improved thermal & oxidation stability; bulk oil up to 315 °C |
Performance standards (as listed by IOCL)
- IOCL heat-transfer oil range — mineral base, low volatility, low vapour pressure
Source: IndianOil Corporation product literature — industrial-speciality-oils. Values are IOCL specification limits; always follow your equipment manufacturer.
About SERVO Therm
IOCL describes SERVOtherm oils as mineral oils developed for industrial heat-transfer service. They have excellent thermal and oxidation stability, low volatility and low vapour pressure for long, trouble-free life in heat-transfer systems. Special and Super contain selected additives. Special is noted for low sulphur and low carbon residue (CCR).
Applications
- Thermic fluid heaters for textile stenters and dyeing ranges
- Plywood and laminate hot presses (common around Tumakuru and Kodagu)
- Chemical reactor jackets and process heating
- Food frying, bitumen and asphalt heating lines
Selection advice
Match the grade to your heater's maximum bulk temperature and design. Don't run any mineral thermic fluid above IOCL's stated limit. Film temperature on the heater tubes is always higher than bulk temperature, so a system running close to the limit needs good circulation. For topping-up versus changing oil, see the thermic fluid maintenance guide.
Shell, Mobil & Castrol grades this replaces
Based on each manufacturer's published data, SERVO Therm (or the SERVO grade named on each page) is the IndianOil match for:
See the full lubricant equivalent chart.
SERVO Therm price, TDS & availability
Institutional prices follow IndianOil's price revisions, so we quote on the day, whether you need a 210 ltr barrel or a 20 ltr pail of SERVO Therm. Share your grade, quantity and delivery district and we will send a GST-inclusive quotation. The IOCL product data sheet (TDS / datasheet PDF) and safety data sheet (MSDS) come with the quote, and batch documents come with the supply.
Industries using SERVO Therm
Delivered across
Related SERVO grades
SERVO Therm – FAQs
IOCL's current literature lists the thermic fluid range as SERVOtherm Medium, Special and Super. Tell us your heater type and maximum bulk temperature and we will recommend the right grade and share its data sheet.
Per IOCL: SERVOtherm Medium is for systems up to 300 °C, and SERVOtherm Special and Super are for systems up to 315 °C (Super: bulk oil temperature).
We quote the institutional price on the day for 210 L barrels or bulk fill of a new system. Share the system capacity and we will also plan the first-fill quantity.
