Service icons 3 year guarantee Safety, durability and reliability. Premium-Parts: A strong brand – guaranteed! Oil guide | 3 Made in Germany The seal stands for high quality, the highest safety standards and compliance with strict environmental guidelines. New product This article is new in our range or it is brand new on the market. Glossary Mineral Group I oils produced by solvent refining are the most commonly produced base oils in the world. Containing 0.03 % sulphur and less than 90 % saturation (reactivity), they are less pure than hydrocracked or synthetic base oils. Group II base oils contain a sulphur content of <0.03 % and a degree of saturation greater than 90 %. Synthesis technology Group III base oils are produced by means of the hydrocracking process and correspond to Group II oils in terms of sulphur content and degree of saturation, but have a significantly higher viscosity index and improved low-temperature flow behaviour. Group III oils are very often used in engine oils. Fully synthetic/syn- thetic Group IV/V are the so-called synthetic oils. They are produced chemically in a multi-stage process. This results in a product with excellent and always consistent properties. When we talk about synthetic or fully synthetic oils, we are mainly talking about polyalphaolefins or esters (PAO has a very high viscosity index and a low pour point, ester also has good ageing resistance). Viscosity Viscosity index (VI) Pour point HTHS SAE classification provides information about the flow behaviour at low and high temperatures and describes the internal friction of liquids. At high temperatures the oil gets thinner (low viscosity), whereas at low temperatures the viscosity increases and the oil gets thicker. describes the behaviour of lubricants due to temperature changes. The higher the VI, the more stable the viscosity with increasing temperatures. is a point for the lowest temperature at which the product is still flowable. The low-temperature properties can be improved by adding flow improvers. High-Temperature-High-Shear describes the minimum viscosity of lubricants measured at an oil temperature of 150°C under the influence of high shear forces. (Society of Automotive Engineers) classifies engine and transmission oils into viscosity classes that are valid worldwide. The oils are marked with the letter "W" (winter). Engine oils, e.g. with 5W, and gear oils, e.g. with 70W, have a prescribed cold flow behaviour at different low temperatures. The smaller the number before the "W", the more flowable the oil is at low temperatures. Engine: 0W, 5 W, 10W, 15W, 20W, Cold start Gearbox: 70W, 75W, 80W, . 30, 40, 50, 60 Hot operation . 85W, 90, 140 The second number after the "W", e.g. 30 for engine oils or 80 for gear oils, marks the load capacity of the oil at high temperatures. The higher the number, the more viscous the oil usually is. www.europart.net
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