7 months ago


New Rymax Lubricants Passenger Car brochures (2018)


THE MOST IMPORTANT LUBRICANT SPECIFICATIONS Given the emission regulations set by governments and the complexity of new engines built by car manufacturers, knowing which engine oil to use can be difficult. This is where oil specifications and OEM recommendations make a world of difference. Specifications are important as they indicate the performance level of the oil. For passenger cars, the two specifications that are widely accepted as the industry standards are API and ACEA. API The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Amongst all the activities of API, one of them is to make lubricant specifications. There are two categories: “S” for petrol (S stands for “service/spark ignition”), “C” for Diesel (C stands for “commercial/compression ignition”). Traditionally, in the American market, petrol engines are mainly for passenger cars whereas diesel engines are for heavy duty applications, but most oils carry both petrol and diesel specifications. The current specification for passenger cars according to the API are: API SN, SM, SL and SJ. The higher the letter after the S or C, the more recent the technology of the oil. For recent oil, the higher specification will supersede the lower letter grade. For example, an oil with SN as a specification can also be used for vehicles which request an API SM, SL and SJ; it is backward compatible. The current specifications according to the API are SN/CF, SM/CF and SL/CF for passenger car and CK-4, CJ-4, CI-4 and CH-4 for commercial vehicles. 14 | CAR | Rymax Lubricants

OEM Most Original Equipment Manufacturers (OEM) have their own set of specifications for engine oil which may meet or exceed both ACEA and API specifications. This is because of the increasing demand for car manufacturers to meet environmental regulations set by governments. This has led to the complex design and configuration that is seen on modern engines. An engine oil must therefore pass several OEM tests in order to prove that it meets the required OEM specifications. OEM’s which are setting the standard in the PCMO segment are Mercedes-Benz, Volkswagen and BMW. ACEA Association des Constructeurs Européens d’Automobiles (ACEA), also known as the European Automobile Manufacturers’ Association, is the European equivalent of API (US). ACEA does neither of the following: certify, license, register, nor issue compliance certificates, where each sequence has an expiration date for marketing. ACEA is more specific in what the performance of the oil actually is. A = Petrol, B = Diesel and C = Catalyst compatible or low/mid SAPS (Sulphated Ash, Phosphorus and Sulphur). There are different ACEA sequences; 2008, 2010, 2012 and 2016. Where each sequence has a validity data for marketing. 2016 is the latest sequence but the 2012 sequence is still valid until December 2018. Unlike API, ACEA specifications are split into performance/ application categories. Rymax Lubricants | CAR | 15

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