BASE OILS
Enhancing hydraulic efficiency using Secondary Polyol Ester®
technology Martin Greaves, Zach Hunt, Jeff DiMaio, Nathan Knotts, VBASE Oil Company Martin Greaves Zach Hunt Jeff DiMaio Nathan Knotts response to this challenge, a new generation of Secondary Polyol Ester® (SPE®
One of the principal challenges currently facing lubricant engineers is the development of formulations that deliver improved energy efficiency. In ) base oils¹ has been
developed by VBASE Oil Company through controlled molecular design. In this article the energy- efficiency performance of a synthetic hydraulic fluid formulated using SPE®
technology in comparison
with a leading factory-fill approved hydraulic fluid is presented. Key aspects of the underlying SPE® chemistry and its contribution to multifunctional performance is highlighted.
Background
Hydraulic systems provide precise control and power transmission in sectors like manufacturing, construction, and transportation. As industries seek improved performance with reduced environmental impact, enhancing hydraulic efficiency has become a priority. Small efficiency improvements can significantly reduce fuel consumption, heat generation, and wear, leading to lower operating costs and enhanced sustainability.
While mechanical design improvements are essential, hydraulic fluid formulation plays a crucial role in system performance. The fluid transmits energy and its physical properties such as viscosity, friction control, shear stability, and air release directly affect energy loss and component life[2]. Advanced formulations reduce internal friction, minimise leakage, and maintain optimal viscosity over a wide temperature range[3].
The use of synthetic hydraulic fluids has become central to efficiency improvements. Traditionally
14 LUBE MAGAZINE NO.191 FEBRUARY 2026
derived from API Group I mineral oils, hydraulic fluids have evolved with the introduction of Group II and III base oils, and later, synthetics such as esters, PAOs and PAGs. Synthetic fluids offer superior high-temperature stability, longer fluid life, and reduced environmental impact, particularly in applications subject to stringent regulations.
Over the past two decades, the adoption of synthetic fluids has accelerated due to several factors including energy efficiency mandates, environmental regulations promoting biodegradable fluids and compact high-pressure systems requiring superior shear stability. Looking forward, they will continue to play a pivotal role as electrification trends demand precise thermal management, sustainability goals push for low-carbon fluids, and OEMs design equipment optimised for high-performance fluids. Energy-efficient fluids enhance the performance and longevity of electrified systems by improving heat management, reducing friction, and lowering power losses, all of which contribute to extended battery life and more efficient power usage. These fluids not only optimise
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