MULTILIFT Ultima S Flex - Oil qualities; Changing to biodegradable oil

153
Ultima S / SL Flex & Pro
3/2019
114060421
Hooklift Multilift Ultima S / SL Flex & Pro
Service Manual
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Oil qualities
Hydraulic system sets many requirements to the hydraulic oil characteristics.
They contain amongst others:
• Lubrication requirements
• Oxidation prevention capability
• Corrosion protection
• Defoaming quality
• High viscosity index, in other words, low change of viscosity when the oil is heated.
In order to meet these requirements and qualities, additives are used in oils. Therefore
it is important that the selected oil meets the characteristics for the operating
environment in question. A lower ambient temperature is the same as the lowest starting
temperature.
NOTE! Vegetable based bio oils are not allowed to be used.
Only synthetic environment friendly oils that meet
the above mentioned requirements are allowed.
NOTE! Do not mix di󰀨erent oil qualities. Mixing of di󰀨erent oils
weakens generally their characteristics. If it is necessary to use
an alternative oil, check with the supplier the characteristics and
correspondence with the recommended oil.
Changing to biodegradable oil
To obtain the best results, the percentage of the mineral oil left in the system should not
exceed 2%. The “Changing to biodegradable oil” –procedure might also apply to new
systems because the hooklift is tested with mineral oil at the factory if otherwise noticed.