text: Source:
  * HL: With agents to enhance corrosion protection and age resistance. Used in hydraulic systems that do not pose any requirements as to wear protection.
  * HLP: With agents to enhance corrosion protection and age resistance. Suitable for most fields of application and components. 
  * HLPD: As HLP but also used in systems where solid or liquid contamination need to be kept temporarily suspended.
  * HVLP: With agents to enhance corrosion protection, age resistance, to reduce scuffing wear in mixed friction areas, and to improve the viscosity-temperature behavior. Used in system operated over a wide temperature range.
  * HVLPD: As HVLP but also used in systems where solid or liquid contamination need to be kept temporarily suspended.