If the lubricant contains effective EP-additives, the life modification factor aISO may be calculated using κ=1 in case of κ<1 and eC>=0.2 and κ>=κlim.
A 
-button allows to increase κ also in case eC<0.2, if the option "Efficiency of EP-additives is proven in actual application" is checked. For very small κ no increase is done. The default limit is set to κlim=0.1, but it can be changed to other values, based on experience.
