all PDS I have come across give viscocity value @ 100C and most at 40C as well.
While I can relate to the 100C measurement when engines normally run between 80~90 degC (from my experience), I do not see the merits of measuring the viscocity at 40C!
Perhaps one measured at 0C would be of better value.
So what is the wisdon behing the 40C??
While I can relate to the 100C measurement when engines normally run between 80~90 degC (from my experience), I do not see the merits of measuring the viscocity at 40C!
Perhaps one measured at 0C would be of better value.
So what is the wisdon behing the 40C??