Shell Tivela S 
Advanced synthetic industrial gear oils
 
Shell Tivela S is an advanced synthetic heavy duty industrial gear oil formulated using specially selected polyalkylene glycol base fluids and additives.  It offers
outstanding lubrication performance under severe operating conditions, including improved energy efficiency, long service life and high resistance to micro-pitting.

Applications

* Enclosed industrial reduction gear systems operating under severe operating conditions,such as high load, very low or elevated
temperatures and wide temperature variations

* Worm gears 

* Particularly recommended for certain‘lubricated-for-life’ systems
 
* Bearing and circulation systems such as calendars, where high bulk oil temperatures are found

* Plain and rolling element bearings
   
Shell Tivela S is not recommended for the lubrication of worm gears manufactured from aluminium containing bronze alloys.  Advice on applications not
covered in this leaflet may be obtained from your Shell representative.

Performance Features and Benefits

* Excellent load carrying capacity and micro-pitting performance
Provides high levels of load carrying capacity even under shock loading conditions, along with high
resistance to micro-pitting (grey staining).These features provide benefits over mineral oil-based
products in terms of gear and bearing component life.

* Superior lubricant performance improving gear efficiency
Tivela S offers improved energy efficiency and lower operating temperatures in worm gear applications.  Rig testing has shown efficiency
improvements of up to 15% in comparison with mineral oil-based products and 11% over other synthetic hydrocarbon-based lubricants.These results have been confirmed by OEM testing and
field experience.

* Excellent oxidation and thermal stability extending lubricant life
Resists the formation of harmful oxidation products at high operating temperatures,improving system cleanliness and therefore
reliability of the equipment.  Tivela S is formally approved by Flender AG as providing a lifetime of
at least 20,000 hours or four years at bulk operating temperatures of up to 80°C.

* Longer service intervals  
Extended component and lubricant life offers the opportunity to extend service intervals and to reduce maintenance and disposal costs.

* Excellent rust and corrosion protection of all metal surfaces

Specifications and Approvals
Meet the David Brown Type G specification.Fully approved by Flender AG.

Seal and paint compatibility
High quality epoxy paints are recommended, as polyalkylene glycols will tend to attack certain conventional paints.  Tivela S has been found to be satisfactory with nitrile and Viton seal materials,
although Viton seals are preferred.

Change over procedure
Tivela S contains polyalkylene glycols and is not compatible with mineral oils or most other synthetic lubricant types.  Care should therefore be taken when changing from such products to
Tivela S.  The system should be flushed with the minimum quantity of Tivela S, operating under no load and draining whilst warm.  Ideally, seals exposed to mineral oils should also be replaced. 
Inspect the lubricant after a few days use. It is also advisable to ensure that oil systems are clean and free from contamination. Tivela S is also not miscible with some other
polyalkylene glycols, so caution is needed when topping-up.  Generally the preference is to avoid mixtures by draining and refilling.  Further advice can be obtained from your local Shell
representative.

Health and Safety
Guidance on Health and Safety are available on the appropriate Material Safety Data Sheet, which can be obtained from your Shell representative.Protect the environment
Take used oil to an authorized collection point.Do not discharge into drains, soil or water.