ISO VG 68

Viscosity Grade

HM

Anti-Wear Type

98

Viscosity Index

-18°C

Pour Point

Select ISO VG grade from your hydraulic system OEM manual or nameplate — ISO VG 68 for higher ambient temperature or higher load conditions

Greater Film Thickness at Elevated Temperature

ISO VG 68 provides greater film thickness than ISO VG 46 at elevated sump temperatures — the correct choice for mining and construction equipment operating in Northern Cape summer conditions where hydraulic fluid temperatures regularly exceed the range where ISO 46 maintains adequate viscosity.

Anti-Wear Pump Protection

Anti-wear (HM) additive system protects gear, vane and piston pumps from wear under high contact loads and pressures — Denison HF-0/HF-1/HF-2 approved at ISO VG 68, confirming performance across the full range of vane and piston pump applications requiring anti-wear certification.

Good Oxidation Stability

Good resistance to oxidative degradation helps prevent sludge and deposit formation — maintaining system cleanliness and consistent hydraulic performance in high-temperature applications where oxidative degradation is accelerated.

Rust & Corrosion Protection

Good rust and corrosion protection for hydraulic system components in mining, marine and offshore environments — protecting system components from corrosion where water contamination is a recurring challenge.

Good Demulsibility

Emulsion time to 3ml at 54°C: 20 minutes — good water separation performance, maintaining oil quality and reducing the accelerated wear and corrosion caused by water-in-oil emulsions in hydraulic systems exposed to water ingress.

Foam Control & Air Release

Good foam control and air release properties maintain consistent fluid compressibility — ensuring reliable hydraulic system response and preventing erratic operation caused by air entrainment in high-cycle industrial and mining hydraulic systems.

Mining Equipment — High Ambient Temperature

Excavators, loaders, haul trucks and mining machinery operating in Northern Cape summer conditions where elevated ambient temperatures cause hydraulic fluid temperatures to exceed the range where ISO VG 46 maintains adequate viscosity — and where the OEM specifies ISO VG 68.

Higher-Load Industrial Hydraulics

Industrial hydraulic power units under consistently higher loads or in higher ambient temperature environments where ISO VG 68 is OEM-specified — heavy presses, high-load actuators and industrial machinery where the heavier grade is required for adequate film protection.

Marine & Offshore Hydraulics

Marine hydraulic systems specifying ISO VG 68 — deck machinery, steering gear and offshore platform equipment. Denison HF-0/1/2 approved at ISO VG 68 covering Denison vane pump hydraulic systems in marine and offshore applications.

Precision Manufacturing — Fives Cincinnati P-69

Fives Cincinnati P-69 approved at ISO VG 68 — the ISO 68-specific Cincinnati approval for precision manufacturing machinery and machine tool hydraulics specifying Fives Cincinnati P-69.

Construction Equipment

Hydraulic systems on ADTs, graders, wheel loaders and compactors where ISO VG 68 is OEM-specified — particularly equipment operating in hot climates or under consistently heavy hydraulic loads where ISO VG 46 thins excessively.

Gear, Vane & Piston Pump Systems

All common hydraulic pump types in industrial and mobile hydraulic systems specifying ISO VG 68 HM anti-wear hydraulic oil — Denison HF-0/1/2 approval confirms performance across all Denison vane pump configurations at this grade.

Parker Denison HF-0 / HF-1 / HF-2

Direct Denison approval at ISO VG 68 — grades 32, 46 and 68 all carry Denison HF-0/1/2 approval

Fives Cincinnati P-69

Fives Cincinnati P-69 approval at ISO VG 68 only — the ISO 68-specific Cincinnati precision manufacturing approval

ASTM D6158 Class HM

Meets ASTM HM anti-wear hydraulic oil specification at ISO VG 68

DIN 51524-2:2017-06

HLP classification at ISO VG 68

ISO L-HM (ISO 11158:2023)

International HM hydraulic oil classification at ISO VG 68