Lubezine Volume 8 * NOVEMBER 2013 - JANUARY 2014 | Page 27

TECHNOLOGY FEATURE An arbitrary scale for lubricating oils that is used to indicate how much the viscosity of the oil varies according to its temperature. In general, viscosity informs how you choose a base oil. Andrew Monk opines that ‘viscosity is and always will be the most important criteria for selecting oil’. He adds: ‘If you get that drastically wrong then no amount