Understanding Shear Stability

We reckon that the oil grades as defined by the J300 document are really not as correlated to oil pressure, protection, fuel economy as the HT/HS viscosity and therefore consider that kinematic viscosity at 100?C ( as in J300) is outdated and can cause partial miss-data. However kinematic viscosity remains a critical indicator for an oil and is best kept at the lowest level (for the desired HT/HS value) to minimize windage losses and maximize engine cooling. More information: click here to view more of this

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