It is not recommended. Hydraulic jack oil is much less viscous than 68. Typical jack oils are 10w -22w oils. Viscosity is a large requirement when choosing oils. Also different oils may have different additives for corrosion resistance and other reasons such as friction and filming agents and so on. You should always use the recommended oils or a qualified replacement as per the manufacturer's specifications.
Hydraulic jacks typically use hydraulic oil with a viscosity grade of ISO 32 or ISO 46, depending on the operating temperature and conditions. It's important to check the manufacturer's specifications for the specific hydraulic jack, as some may recommend specific oil types or brands. Using the correct grade ensures efficient operation and longevity of the jack. Always avoid using motor oils or other non-hydraulic fluids, as they can damage the system.
Hydraulic Jack oil
Hydraulic jack oil at auto parts or Wal-Mart store
i made this mistake on an hydraulic breaker pack,no damage was caused to the pump or breaker.however the operation of the equipment was sluggish until the machine really warmed up.presumably because the 46 oil is" thicker" than the iso 32
Open the drain screw that holds the body of the hydraulic jack. This way you can addhydraulic oil to the hydraulic jack.
Use "Hydraulic Jack Oil" only
ISO 46 refers to the viscosity grade of hydraulic oil as defined by the International Organization for Standardization (ISO). The number 46 indicates the oil's kinematic viscosity at 40°C, which is approximately 46 centistokes (cSt). This viscosity level is suitable for various hydraulic systems, providing adequate lubrication and performance under moderate temperatures and pressures. ISO viscosity grades help ensure compatibility and effective operation in hydraulic machinery.
Hydraulic jack oil Available at auto parts store or Wal-Mart Use AW68 grade hydraulic oil
These jacks generally use hydraulic oil to operate the hydraulic system. There are a number of different types of oil for these jacks, but they are so similar that they are often marketed as "hydraulic jack oil" and there is little to no differentiation.
ISO Grade 68 flashpoint is 430 degrees F
vg stands for viscosity grade. Hydrualic oil comes in many grades.
Use Bobcat (Orange) Hydraulic Oil. If you don't have access to this use hydraulic ISO 46 for temps of -40 to 80f. Use ISO 100 for +40 to 120f. 10w30 motor oil will also work in a pinch but try not to mix....go back to hydraulic at next change.