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How to Choose the Right Hydraulic Oil

Guides · RJ Enterprises · 6 Oct 2026

How to Choose the Right Hydraulic Oil

Published Updated 1 min readBy RJ Enterprises

Viscosity grade, anti-wear additives and operating temperature decide which hydraulic oil suits your machine.

Start with the machine manufacturer's recommended ISO viscosity grade. Then consider operating temperature, system pressure and whether the oil needs anti-wear (AW) additives.

Quick checklist

  • Match the ISO VG grade to the OEM manual
  • Use AW oils for high-pressure pumps
  • Never mix different oil brands without checking compatibility

Need help? Contact our team for a recommendation.

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Frequently asked questions

Which hydraulic oil viscosity grade should I use?

Use the ISO VG grade given in the machine manufacturer's manual. ISO VG 32, 46 and 68 are the most common.

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