Servo SERVOSYSTEM and Banesto HLP: The Technical Case for Direct Equivalence
Both SERVOSYSTEM and Banesto HLP are ISO 11158 Type HM anti-wear hydraulic oils formulated to DIN 51524 Part 2 (HLP type). Both products use a zinc-based dialkyldithiophosphate (ZDDP) anti-wear package, providing wear protection through zinc DTP films on metal surfaces at operating temperature and pressure.
The base oil stocks used by IndianOil's Servo brand and by Banesto are both Group I/Group II mineral base oils of Indian and international origin. The finished product viscosity, VI, pour point and flash point at each ISO VG level are controlled to the same international specification window. In the absence of OEM-specific approvals, the two products are functionally comparable for most standard applications. Before switching, verify drain intervals, seal and filter compatibility, and confirm any OEM-specific approval requirements for your equipment.
Is Servo SERVOSYSTEM Available in BIS Certified Grades?
Yes — Servo SERVOSYSTEM carries BIS (Bureau of Indian Standards) certification to IS:3098 for key grades including VG 46. Banesto's HLP range also holds BIS certification. This makes both products eligible for government and PSU procurement under IS:3098 specifications. If your tender or purchase order specifies BIS IS:3098 compliance, both products qualify.
Note on Zinc-Free (Ashless) Requirements: Some equipment OEMs — particularly Bosch Rexroth, Parker, Vickers and certain Japanese hydraulic pump manufacturers — specify zinc-free (ashless) anti-wear hydraulic oil, often called HLP-D or HLPD. Standard SERVOSYSTEM and standard Banesto HLP both contain zinc. If your pump or valve OEM specifies zinc-free hydraulic oil, neither product applies and you should contact Banesto's technical team for the correct grade.
SERVOSYSTEM HV vs Banesto HLP: The VI Difference Explained
Servo produces an HVLP-class product (SERVOSYSTEM HV) with a Viscosity Index of ≥ 140, achieved through VI improver polymer additions. Banesto's standard HLP has a VI of approximately 103–107, which is normal for mineral HLP oils. The gap of approximately 33–37 VI points has practical significance only in applications where the oil temperature swings widely — typically mobile equipment or outdoor systems in climates with large seasonal temperature variation.
For fixed-installation industrial hydraulic systems in India (presses, injection moulding machines, machine tool hydraulics), the standard HLP 46 or 68 performs without issue. If you currently run SERVOSYSTEM HV specifically because of wide-temperature performance, discuss your operating conditions with Banesto's technical team before switching to the standard HLP grade.