Manual Oil Analysis.
I know just about everyone here must do it. Pull the dipstick out and check the color of that drop of oil still hanging on the end of the dipstick.
-- or how dark it looks on the crosshatches. Then, put that drop of oil on the forefinger, and rub it lightly between your thumb/forefinger to check for lubricity.
In the old days (70/80’s) with the old Grp I based oils, it seemed like one could tell that after a 3000mile/6month oil change that the oil was loosing its lubricity. These, days, no matter how long I go the oils still feel really slippery even when drained at the end of my OCI.
I know just about everyone here must do it. Pull the dipstick out and check the color of that drop of oil still hanging on the end of the dipstick.
In the old days (70/80’s) with the old Grp I based oils, it seemed like one could tell that after a 3000mile/6month oil change that the oil was loosing its lubricity. These, days, no matter how long I go the oils still feel really slippery even when drained at the end of my OCI.