Optimize your fleet's hydraulic systems with the right fluid choice. Learn the differences between ISO 32 and ISO 46 hydraulic fluids to ensure performance, longevity, and DOT compliance.
Maximize hydraulic system efficiency with the right ISO fluid selection.
Choosing between ISO 32 and ISO 46 hydraulic fluids is critical for heavy fleet performance, especially in demanding conditions.
ISO 32 and ISO 46 refer to the viscosity grades of hydraulic fluids, measured in centistokes (cSt) at 40°C. ISO 32 is lighter and flows better in colder environments, while ISO 46 is thicker, providing better film strength in high-temperature or high-pressure applications.
| Fluid Type | Viscosity (cSt at 40°C) | Best Use Case |
|---|---|---|
| ISO 32 | 28.8–35.2 | Cold climates, low-pressure systems |
| ISO 46 | 41.4–50.6 | High temperatures, high-pressure systems |
Ensure optimal performance and compliance with tailored hydraulic fluid protocols for DEF-equipped fleets.
A streamlined process to select and implement the right hydraulic fluid for your fleet.
Evaluate temperature ranges, system pressures, and environmental factors affecting fluid performance.
Choose between ISO 32 or ISO 46 based on equipment specifications and operating conditions.
Educate staff on proper fluid handling, sampling intervals, and maintenance procedures.
Selecting the right hydraulic fluid improves system efficiency, reduces maintenance costs, and extends equipment life.
Reduction in hydraulic system failures
Decrease in maintenance costs
Increase in equipment lifespan
Compliance with OEM standards
"Switching to ISO 46 for our high-pressure hydraulic systems reduced pump wear by 70% and cut downtime significantly, saving us thousands annually."
Fleet Manager, Coastal Logistics
Answers to key questions about selecting and using hydraulic fluids in DEF-equipped fleets.
ISO 32 is ideal for colder climates or low-pressure systems where thinner fluid ensures better flow and reduced wear at lower temperatures.
ISO 46 is better for high-temperature or high-pressure systems, providing superior film strength and protection under demanding conditions.
Follow ISO cleanliness targets, use proper storage practices, and conduct regular oil sampling to prevent contamination.
Mixing is not recommended as it can alter viscosity and performance. Always flush the system before switching fluid types.
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