For a useful lab-report and diagnosis correct sample-taking is strictly necessary.
Take the oil sample:
- During operation or immediately after a shutdown
- At normal operating temperature (max. 80°C)
- Always at the same point with the same method
- If possible never from, but before the filter
- Not after changing the oil or after considerable quantities of oil have been added
- Put the sample in a clean and dry container preferably in the original sample bottle of an analysis kit