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Motor oils are exposed to high shear forces and temperatures while the motor is running. Mechanical abrasions set iron and copper free, which act as catalysts for oxidation. All of this decreases the durability of motor oils. The oxidation stability with iron and copper catalysts can give an approximate indication for the shelf life. A reproducible and accurate determination of the oxidation stability using the 892 Professional Rancimat can be realized. 


Metrohm AG

9100 Herisau