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Low volatility for reduced oil consumption Improved LVLV PAO base stocks have been designed to minimise oil volatility by carefully selecting and processing raw materials. Low volatility helps lower oil consumption while reducing CO2
emissions and extending drain intervals.
New LVLV PAO base stocks have demonstrated lower volatility at high temperatures than conventional PAO and mineral-based Group I, II, and III base stocks. In Noack volatility testing, an improved LVLV PAO base stock with a KV100 of 3.5 cSt lost just 11.6% of its weight. This was lower than that of conventional PAO base stocks and Group III and III+ base stocks with a KV100 of ~4 cSt, which had weight losses between 12.6% and 17% and 11.9% and 40.7%, respectively.
Low Viscosity Basestocks - NOACK vs CCS at -35C
Enhanced lubricity and traction for enhanced energy efficiency
Engine oils and EV lubricants are designed to reduce the amount of friction between surfaces. This feature can increase energy efficiency and potentially extend the driving range in EVs or lead to less fuel consumption in an Internal Combustion Engine (ICE).
Excellent low-temperature properties for optimal performance Fluid temperature stability is important to the performance of engine oils and determines their optimal operating temperature range. At low temperatures, fluid viscosity increases and reaches the pour point, and this is where it no longer flows and becomes unusable for specific applications. An improved LVLV PAO base stock has a pour point of -78°C, lower than conventional PAOs and Group III/III+ mineral oils, which have pour points ranging from -65 to -66°C and -18 to -33°C, respectively.
Cold-Crank simulator (CSS) test simulates oil viscosity in crankshaft bearings during cold temperature start-up. When compared to conventional PAO base stocks and Group III/III+ mineral oils, a new LVLV PAO base stock has the lowest viscosity with 790 centipoises in a CCS test at -35°C. In both of these tests, the new LVLV PAO base stock shows excellent low-temperature properties.
16 LUBE MAGAZINE NO.168 APRIL 2022
In Mini-Traction Machine (MTM) tests that measure the friction coefficient property of lubricated contacts, improved LVLV PAO base stock demonstrated significantly lower friction coefficient and torque loss compared to conventional PAOs and Group II+/III+ mineral oils. These enhanced lubricity and traction characteristics can lead to improved fuel economy and energy efficiency.
Improved flash point for safety The flash point is the lowest temperature at which an ignition source causes the vapors of a lubricant to ignite under specified conditions. The flash point is typically 225°C for mineral oils and helps indicate the safety hazards concerning fire and explosion. ASTM D92 and D93 cover the flash point and the slightly higher fire point.
When tested with the ASTM D92 test, improved LVLV PAO base stock had a flash point of 234°C, higher than the flash point ranges of conventional PAOs and Group III/III+ mineral oils, which had flash points ranges of 220 to 224°C and 201 to 232°C, respectively.
Improved oxidative stability for engine cleanliness and longer drain intervals Oxidation occurs when a lubricant combines with oxygen and is responsible for several lubricant problems, including viscosity increase and the formation of varnish, sludge, and sediment. With this in mind, oil with high oxidative stability is desirable as it supports engine cleanliness and longer drain intervals.
In our tests, the improved LVLV PAO base stock demonstrated superior oxidative stability and had lower viscosity and Total Acid Number change after 192 hours at 170°C than conventional PAO and Group III/III+ mineral base stocks. And in an oxidation test, the new base stock lasted more than twice as long as any other base stock.
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