IN MOTION: if possible, while the machine is working;
WHEN IT'S HOT: even if the machine is not working, sample the oil within 30 minutes from the shutdown, at the working temperature (max. 80 ° C);
NOT after oil changes, or after significant oil refilling;
STANDARD PROCEDURE: standardize the sampling procedures to perform repeatable samples;
BEFORE THE FILTERS: sample preferably before of the filtering systems;
DYNAMIC SAMPLING: if possible, sample from lines near curves, where the flow is more turbulent;
STATIC SAMPLING: from tank or crankcase, to mid-height.