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Zinc-free benefits The demand for greater reliability and efficiency has brought the spotlight back onto zinc-free fluids, and that’s before even considering their environmental advantages.


Zinc-free formulations can offer considerable gains over zinc-based fluids, against key performance measures,’ adds Joanna. ‘From thermal and oxidation stability, to stronger wear protection and greater ability to deal with contaminants, the right zinc-free fluid scores higher on all counts.


New field results While relevant assessment methods using genuine components help, no lab test gives a perfect prediction of field performance. Validation of even the most stringent ratings can only be done in the real world, which is why companies are putting zinc-free hydraulic technology to the test.


Afton Chemical recently completed a two-year field trial in cement trucks in St. Louis, USA. Operating conditions were challenging, with ambient temperatures ranging from -20 to +40°C.


The technology delivered an impressive two years of uninterrupted service, with the benefits seen during pump and bench testing also being seen by end users. A strip down at the end of the two-year trial revealed less than 100mg total wear across all the pistons in the pump – a fantastic result given the severe operating conditions.


Zinc-free hydraulic fluids are not just about environmental benefits. They represent a genuine economic opportunity for oil marketers through value differentiation; real world reliability enhancement and lower TCO for end users, and better all-round support for OEM components facing the harshest operating environments ever.


It’s rare that economic and environmental pressures lead to the same solution but in the case of zinc-free hydraulics, they go hand in hand.


LINK www.aftonchemical.com


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