Synthetic oil for continuously variable transmissions
Striking a balance
Metal-on-metal friction coefficient
In laboratory testing, five lubricant blends were evaluated to measure metal-on-metal friction coefficient using a block-on-ring machine (LFW-1, JASO M358). The three SpectraSyn Elite™ metallocene polyalphaolefin (mPAO) blends with Group III/II mineral base stocks demonstrated stable and high friction coefficient compared to mineral blends featuring ethylene propylene copolymer (EPC) and conventional polyalphaolefins (cPAO). This friction performance can result in smooth and high torque transfer in continuously variable transmissions.
Low temperature performance
Like other transmission lubricants, CVT fluids need performance capabilities at cold temperatures. In ASTM D2983, the standard test method for low-temperature viscosity for transmission fluids, SpectraSyn Elite mPAO and SpectraSyn™ PAO base stocks demonstrate superior low-temperature performance to EPC.