Sludge Formation Analysis in Hydraulic Oil of Load Haul Dumper 811MK V Machine Running at Elevated Temperatures for Bioenergy Applications

Table 1

Test report of new hydraulic oil HFDU-68 done at Testing Laboratory of M/s Sun Oil Company Pvt. Ltd., Kolkata.

S. No.	Test parameters	Test method IS 1448/ASTM	Results	Specification IS-10532, Part-5, organic ester type and IS: 7895-1975 (reaffirmed 2002) for fire-resistance properties
1	Appearance	Qualitative	Pale yellow	Pale yellow
2	Type	Qualitative	Synthetic fluids (organic ester)	Synthetic fluids (organic ester)
3	Kinematic Viscosity@40°C, cSt	IS 1448[P:25]	68.69	61.2–74.8
	Kinematic viscosity@ 100°C, cSt	IS 1448[P:25]	11.9	11–13
4	Viscosity index	IS 1448[P:56]	176	175
5	Specific gravity @15°C	IS 1448[P:32]	0.9006	0.90–0.99
6	Flash point, COC, °C, min	IS 1448[P:69]	288	250
7	Fire point, °C, min	IS 1448[P:69]	306	290
8	Pour point, °C, max	IS 1448[P:10]	(−) 12	(−) 9
9	TAN, mg KOH/g		1.1	—