CLASSIFICATIONS AND APPROVALS/ADMISSIONS OF OILS
developed by the organizations "Association des Constructeurs Europeens d'Automobiles" (for example, ACEA A5/B5 for petrol and diesel engines, and ACEA C1, C2, C3, C4 for the engines equipped by catalytic converter) and "American Petroleum Institute" (for example, API SJ). These classifications mean that motor oil conforms to the minimum industry standards.
In addition to requirements to efficiency of the greasings regulated by ACEA and API, some motor oils meet the special requirements of certain producers, for example VW 502.00/505.00 for Volkswagen engines * or MB 229.3 for engines to Mercedes-Benz*.Vsa products of PEMCO exceed requirements of ACEA and API according to the characteristics. Besides, some products from our range have been specially developed for specific models of cars/engines. In such cases products of Pemco exceed the specifications which are put forward by car maker.
To choose qualitative oil, the most compatible to the engine of your car, it is necessary to study the operation manual. The producer of the car specifies classification of ACEA and/or API, and sometimes and special admissions of certain producers.
CHOICE OF MOTOR OIL
At the choice of motor oil it must be kept in mind that it has to carry out the following functions qualitatively:
To provide easy start and to protect engine details during start
To fill the minimum gaps between piston rings and walls of the cylinder
To cool moving details of the engine, taking away from them heat
To clear engine surfaces
To hold foreign particles in suspension, without allowing their adjournment on details of the engine to Help to prevent rust and corrosion
Pemco motor oils not only perfectly cope with objectives, but also provide the increased efficiency, prolong endurance and increase protection against wear of your engine.
Viscosity of motor oil
Viscosity is measure of flowability of oil. This parameter is one of the major at the choice of motor oil. Society of automobile engineers (SAE) has developed system of classification on the basis of viscosity measurements. Hot oil has the increased flowability in comparison with cold.
The correct indicator of viscosity provides rather thin film of oil capable to get to all details of the engine at cold start-up, and at the same time rather thick coat for reliable protection of the engine at its heating during operation.
There are two types of classification of SAE: highly specialized and multigrade (all-weather) oils. Highly specialized oil, it as SAE 30, has certain restrictions on ambient temperature and can have insufficient flowability for protection of the engine at very low temperatures. All-season oil, it as SAE 10W-40, it is possible to use with the wide temperature range. These oils are used very widely as they provide easy start-up and flowability at low temperatures, and at the same time remain rather dense at high temperatures, guaranteeing effective greasing.
The letter "W" means "winter" and specifies that oil conforms to requirements of operation at low ambient temperatures.