英文版如下,程度不錯可以看看
Viscosity at hot temperatures was measured until quite recently at only 100 °C, which is not too representative of the temperatures reached today by the latest generation of engines. Therefore it was decided to also measure viscosity at 150 °C, and under a high shear rate, so as to really examine the ability of the lubricant. Hence what HTHS (High Temperature, High Shear) viscosity stands for.
The concept exists of High HTHS and Low HTHS: A low HTHS oil has a lower viscosity at high temperature (<3.5 mPa.s) than that of a so-called High HTHS oil (>3.5 mPa.s). Please note that the “mPa.s” is a unit to measure viscosity. This notion is important as it allows for the classification, on the one hand, of fuel economy oils having a low HTHS and, on the other hand, of high protection oils having a high HTHS.
11.鹼性添加劑 (Alkaline Additive)或總鹼價提昇劑 (Total Base Number Booster): 其作用在於提高潤滑油中鹼性物質的劑量。其功效即是中和燃料(汽油、柴油)中所含之硫份因燃燒後產生的酸性硫化物,免得汽缸內壁(Cylinder Wall)及活塞環(Piston Ring)等被這些酸性物質所腐蝕。