The below may give some support to TSC UTF is by Shell. I found it in another TBN tread on the subject in a link to Jobbers World.
[FONT=Verdana,Geneva,Arial,Helvetica,sans-serif]Shell Offers Revitalized Hydraulic Fluid[/FONT][FONT=Verdana,Geneva,Arial,Helvetica,sans-serif]Shell Tellus Oil STX Helps to Maximize Performance in Mobile and Stationary Hydraulic Applications[/FONT]
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[FONT=Verdana,Geneva,Arial,Helvetica,sans-serif]Shell Lubricants has launched a multigrade hydraulic fluid designed for operators demanding a lubricant free of heavy metals that will perform in extreme conditions: Shell Tellus Oil STX.
Shell Tellus Oil STX is a zinc-free, ashless hydraulic fluid with high shear stability, formulated with Group II base oils with additive technology. The fluid's wide temperature range and 160 viscosity index allows operators to reduce the number of hydraulic grades, with one oil being able to operate in a wide range of environments. Fast start-up can also be achieved through the fluid's excellent low temperature performance, while improved equipment protection and retention of fluid viscosity properties during operation can also be expected.
"A truly great hydraulic fluid is one that offers a wide temperature range as well as other key performance features, such as high shear stability and versatility," said Dennis Woodley, Shell Hydraulics Product Application Specialist. "Only by choosing a product that performs well in even the most extreme conditions will you be able to help reduce downtime and maximize productivity."
Shell Tellus Oil STX fluid can be used for a wide range of applications for mining, farming, construction or marine industries. The product joins the Shell Tellus range of hydraulic oils, which have been designed to provide long fluid life and low temperature fluidity."
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