Gas Engine Oils & Heat Transfer Fluids

Specialty oils for stationary gas engines and closed-loop heat-transfer systems.

Quick Answer

Castrol Duratec L (gas-engine oils for stationary natural-gas, biogas and landfill-gas engines) and Perfecto HT (heat-transfer fluids for closed-loop process heating, plastics, asphalt). Duratec selected for low-ash, long-drain engine performance with strict TBN retention. Perfecto HT covers operating temperatures up to 320°C with excellent thermal stability and low coking propensity.

Product Range

Duratec L / L Plus

Gas-engine oil

Low-ash gas-engine oil for CHP, landfill and biogas engines.

Perfecto HT 5

Heat-transfer fluid

Mineral-based heat-transfer oil for thermic-fluid heaters up to 320°C.

Perfecto HT 5 Syn

Synthetic heat-transfer

Alkylbenzene synthetic for bulk temperatures up to 340°C with extended drain.

Typical Applications

Stationary gas engines (CHP plants, biogas)
Natural-gas compression engines
Thermic-fluid heating systems (food, textile, chemical)
Closed-loop industrial heating up to 340°C

Why buy from Vasundhara Specialities

As the authorized Castrol industrial distributor for Andhra Pradesh, every drum and pail we supply is sourced directly from Castrol India’s Silvassa, Paharpur and Patalganga plants with full batch traceability. Our Bhimavaram warehouse stocks the complete gas engine oils & heat transfer fluids range for 48–72 hour delivery across AP, and our technical team is available on-site for application trials, coolant sampling, and training. Paired with our CoolantCare fluid management programme, you get not just a supplier but a lubrication partner committed to lowering your total cost of lubrication.

Frequently Asked Questions

Why low-ash for gas engines?

Gas engines run leaner than diesel and have less combustion "wash" to clear deposits. Low-ash (SAPS) oil prevents pre-ignition and valve-seat deposit build-up.

Request a quotation

Share your application details and tank/bearing sizes — we will respond with a tailored recommendation and pricing within 24 hours.

Request a Quote WhatsApp Us