Product newsletter – September 2024

At Univar Solutions, we are constantly responsive to market demands, and therefore we continuously adapt our product portfolio. For that reason, we have some product news that we would like to share with you.

If you have any questions or need more information, please contact our product specialists at nordic.technicalhelpdesk@univarsolutions.com

Shell Tellus S4 VK 31 and 46 is the new advanced synthetic Gas-to-Liquid (GTL) zinc-based high performance all season hydraulic fluid.

Shell Tellus S4 VK – Designed for all seasons

Shell Tellus S4 VK is a shear stable hydraulic fluid that exhibits good fluidity which enables fluid pumpability down to -30°C for use in mobile applications.

Wide operating window

Customer benefit


A high viscosity index in combination with robust
shear stability and excellent low-temperature fluidity
provide a year-round fluid that protects the machine
from cavitation at cold start-ups and provides durability at higher operating temperatures. In addition to protecting the machine over a wide temperature operating range, shear stable high viscosity index fluids enable increased hydraulic efficiency.


Some arctic grades have low flashpoints, which may
increase operational risk and costs.
Shell Tellus S4 VK has a flashpoint ≥195°C, which
may help to increase safety and lower business
operating and insurance costs compared with arctic
grades.

Customer Shear stability – minimizing the viscosity loss in operation.

VI improvers are used to increase the VI of mineral oils to increase their operating
temperature range.

Shell Tellus S4 VK has a synthetic GTL base fluid that gives it an inherently high
viscosity index (VI) meaning that less VI-improvers need to be added but when
needed Shell uses high-quality improvers designed for low shear loss. The result is
low shear loss and longer fluid life. The product is available in drums and pails.

However, long-chain VI iprover molecules can be shared when forced over sharp edges and tight orifices and vanes, which leads to

  • Permanent
  • hightemperature viscosity loss
  • Short fluid life
  • Excess wear
  • Internal leakage and higher temperatures
  • Low volumetric pump evviciency (slow operation)