Q&A Questions and answers
The latest article
Discrepancies in the "Additives" section - do these indicate a mixture of two different types of oil?
For years we have always been using an oil from the same manufacturer with the same name and specification to lubricate our systems. It is regularly monitored with trend analyses. Oil changes are carried out on the basis of the suggestions of OELCHECK tribologists in the laboratory report. We have never noticed any abnormalities. However, the latest laboratory report now shows discrepancies under the heading “Additives” that do not fit with previous analyses or fresh oil.
Do the changed values indicate a mixture of two different types of oil?
What other reason could there be?
- Biodiesel in engine oil
- Black hydraulic oil due to diesel effect
- Can lubricating oil go bad?
- Can values change if the oil samples are stored for a long period of time?
- Cause for deviating purity classes in comparative analyses
- Cloudy oil - why?
- Data protection at OELCHECK
- Determining the mileage of an engine with an oil analysis
- Diesel fuel fit for the winter
- Different values from OELCHECK and another laboratory
- Discrepancies between laboratory results and portable particle counters
- Discrepancies in the "Additives" section - do these indicate a mixture of two different types of oil?
- Do bypass filters deliver what they promise?
- Do online oil sensors make OELCHECK laboratory analyses superfluous?
- Engine oils - Warning against uncontrolled oil change extensions
- Gearbox damage despite oil analyses?
- High levels of wear metals with normal purity classes?
- How can E10 be detected in engine oil?
- How clean are the OELCHECK sample bottles?
- How do I take an oil sample correctly?
- How much oil does OELCHECK need for an oil analysis?
- Increasing calcium content in lubricating oils
- Is a fresh oil analysis worthwhile?
- Is it possible to simplify the documentation of OELCHECK lab-reports?
- Leakages on seals despite very good oil purity?
- Miraculous oil increase in the engine of a construction machine
- OELCHECK Express Analysis
- Ölproben aus dem Ausland
- Parameters for grease analyses
- Relationship between wear, impurities and particle counting
- SAE classes 110 and 190 for automotive gear oils
- SAE engine oil or HLP hydraulic oil for construction machinery hydraulics?
- Saving money with lubricants - price alone doesn't cut it.
- Schwarzes Öl im Dieselmotor
- Sending oil samples - what do you have to consider?
- Silverfish in hydraulic oil
- Single tests only in connection with an analysis kit 1
- Soot index for petrol engines
- Sulphur in oil - impurity, oil component or additive?
- Synthetic oil: What should be considered when switching?
- Synthetic oils - does their use really pay off?
- The shear viscosity of greases
- The time factor when taking samples correctly
- What does the change in colour say about the quality of the oil?
- What is meant by the term "bio-oil"?
- What percentage of water in the oil is critical?
- Why are no values for oxidation given in some OELCHECK laboratory reports?
- Why do you not indicate any "limit values" in your laboratory reports?
- Why is my oil foaming?
- Zirconium – why does this element pop up in lab reports?