Kuwait Routine Analysis Service (KRAS)
KRAS is a Q8 analysis system for determining the condition of an oil and the condition of the equipment in which the oil was used. Regular analysis of the oil can determine oil drain intervals and prevent damage to vehicles and/or machines. KRAS provides fast and reliable results via e-mail or access to customers own data via the internet.
KRAS results are reported in very informative reports. Every KRAS report includes a conclusion and recommendation of action(s) required. Many aspects are shown in the report. Some data are shown in graphical format with minimum and maximum levels to provide a quick overview. Information about the most common KRAS tests is listed below.
KRAS - Test Information
Total Base Number - Total Base Number (TBN) is an indication of the oils reserve to counteract acids. Oils with higher TBN will provide higher levels of protection against acids.
Total Acid Number - TAN is defined as the amount of acid and acid-like material in the oil. Oxidation and nitration resins make up the majority of this material. TAN analysis is used to establish the optimum oil drain interval.
pH - pH is a measure of the acidity or basicity of a solution. The pH value can be used as an indicator for the oil drain.
Oxidation - Oxidation occurs when oil is exposed to oxygen over long periods, especially under high operating temperatures. Oxidation is a common problem and can cause thickening of the oil. Oxidation will is also the cause of formation of severe varnish and carbon deposits.
Nitration - Nitration is a degration of the oil by reaction with gaseous nitrous oxides (NOx) which are created during combustion. Severe nitration of the oil can indicate issues like sludge, rust and corrosion.
Water - Water contamination can cause several problems even at water levels of 100 mg/kg. Is may cause problems like foaming, break down of the oil into emulsions and sludge that for example can cause filter blocking.
Inductively Couple Plasma (ICP) - An ICP is an instrument which is based on emission spectrometry. It is used to analyze types and quantities of metals found in oil. Included in these metals are particles of system wear, oil additive metals and contaminant metals. Normally, 20 metals are measured and reported in mg/kg. The ICP results give a good impression of the health of the vehicles and machines.
Fuel Dilution - The presence of fuel in an engine oil reduces oil viscosity and weakens detergency. Some fuel dilution is always to be expected but high values for fuel dilution must be considered as very serious because it can result in severe engine damage. The most accurate method for a quantitative measurement of fuel dilution is gas chromatography. This is a method of separating the contents of the sample by boiling point.
The result of the millipore filtration test indicates the amount of particles in the oil sample and is expressed in mg/l. The millipore result is an indication of the cleanliness of the oil.
Insoluble matter and dispersion
Insoluble matter (soot) is an important oil and engine condition indicator. Soot and dispersion are measured by way of the oil spot test. Results are compared to standards and are reported in % soot and % dispersion.
Flash point (go or no-go at 190°)
Flash point indicates the presence of fuel. Under specified conditions a small oil sample is heated to 190° and checked for ignition (flash) at that temperature.