German TÜV-Certification
was valid until 4 June 2015
German TÜV-tested wear protection effectiveness of 20W-50 SC
TÜV formally certified „Rektol Klassik 20W-50 SC“ engine oil, a product of Pohlmann Mineralölwerk GmbH & Co. KG, concerning its wear protection effectiveness. This certification is linked to recurrent TÜV inspectations of a production plant. This guarantees the constantly high product quality.
was valid until 12 December 2015
Certain parts from non-ferrous metals such as copper, bronze or brass react very sensitively to acid acting ingredients in the lubricating oil. In many classic drive components you will find for example synchronizer rings, bushes and bearing shells from non-ferrous metal alloys etc., which can particularly react or corrode in contact with EP additives at increased temperatures. In order to clarify the above mentioned „aggressiveness“ of the lubricating oil, for example copper strip test according to DIN EN ISO 2160 (ASTM D 130) is often used. The results are specified in 4 classes from 1 (mild) to 4 (corrosion). Therefore our Rektol Gear 300 transmission oil was classified as 1b and can be considered as mild lubricant . This means that the corrosion tendency on the components especially made from non-ferrous metals can be ignored by using our Rektol Gear 300 transmission oil.
was valid until 3 January 2016
Very important oil criteria for high loaded sports engines are - in addition to typical properties such as wear protection, cleaning efficiency, shear strength etc. - especially the evaporation loss and the High Temperature High Shear viscosity (HTHS).
The evaporation loss indicates how many oil evaporates in one hour at 250 °C. This notice the driver as oil loss, which must be always added to the current quantity of oil. These oil losses concern in particular the volatile (thin liquid) components in the engine oil. Once these quantities of oil evaporates, the oil viscosity behaviour also changes. At high evaporation losses a usual 15W-50 - in the worst case - changes to 20W-50. In this case the optimum lubrication properties, especially for a cold start, are no longer met. The High Temperature High Share (HTHS) measured under shear load is an indicator for the lubrication reliability, for example in the valve drive or piston skirt. This value is important for air cooled sports engines, which generally runs at high temperature levels as water cooled engines.