technical help

Engine Oils
The information on the oil packaging contains important clues about performance of the oil. There should be information about five issues on the packaging in general. These; brand, its contents (be mineral, synthetic or synthetic based), viscosity grade (such as 5W-30, 10W-40), international performances (such as API CK-4, ACEA C3), OEM performances (such as MB-Approval 228.51, Volvo VDS- 4, VW 504 00/507 00).
PETDER serves free of charge regardless of quantity and distance throughout Turkey with its waste engine oil collecting organization. Waste producers may contact PETDER as the Authorized Establishment through the website www.petder.org.tr, via e-mail atikyag@petder.org.tr or via telephone 0212-229 39 99 to gain information or to have waste oil they collected in accordance with principals of regulation collected. The collecting process is monitored on satellite with central planning and is conducted by vehicles appropriate to EU standards and trained staff.
As a general principle, mixing of oils with different properties and different brands is not appropriate. However, the decrease in oil was a variety of reasons and if it is necessary to complete the same viscosity and quality class can be added with other brand oils. It is recommended that the oil is completely drained and replaced with new oil at the most convenient time after the addition with another brand of oil. Hydraulic brake fluid at the same quality level can be mixed with each other regardless of brand.
Gear Oils
The Association of Automotive Engineers (SAE) classifies automotive gear oils according to their kinematic viscosity values ​​at 100 °C and their pumpability at low temperatures. For example, the SAE 80W-90 in an automotive gear oil '90' describes the kinematic viscosity of this gear oil at 100 °C. As this number increases oil thickens, if the number decreases oil thins. The kinematic viscosity of '90' gear oil at 100 °C is between 13.50 and 18.50 cST while the kinematic viscosity of '140' gear oil at 100 °C must be between 24.00 and 32.50 cST. The number to the left of W (Winter) determines the performance of gear oil at low temperatures. Pumping temperature of '80W' gear oil is -26 °C while pumping temperature of '75W' gear oil is -40 °C.
It is the API classification used for gear oils. Oil that contains additives to balance excessive pressure and pulsed load for hypoid gear type differentials running under heavy conditions and that fulfills MIL-L-2105 specifications. In GL-5, there are more overpressure additives and it is generally used under heavy work conditions. Unless otherwise specified, GL-5 should not be used in places where GL-4 is recommended. Because the sulphide in overpressure additive which is present excessively in GL-5 corrodes yellow metals.
In terms of application of lubricating with oil where it is not possible to use grease especially in ball bearings.
With manual hand pump or air pump can be printed directly into the bearing. In systems with central automatic lubrication, the grease is filled into the central chamber, the pneumatic system greases the greasing points automatically with the specified intervals.
Greases may leak during storage and base oil also tends to oscillate. The oil leakage rate will increase over time and will vary depending on the storage temperature. The grease should ideally be stored in a cool, dry interior and the ambient temperature should not exceed 30 °C and should not be less than 0 °C. The grease must be protected from dust, dirt, moisture or rainwater, and from direct sunlight.
The most appropriate method to accurately measure the freezing point of antifreeze is the use of a refractometer. How to use refractometer:Take the refractometer by holding it from the body with the side of the oblique prism where the sample is dripped from the body and holding the cover in the closed position and place the binocular section in the eye and try to read the value in the measurement table according to the refrigerant structure you use. If the values ​​you see are not clear, you can rotate the measuring table immediately by turning the adjustment ring on the binoculars and adjust the sharpness. The value corresponding to the cross-section in the light-dark two phase in the table will give you the degree of protection. Since measurements with bomometer-like measuring devices give very variable results, it is not recommended to use antifreeze in freezing point measurement.
Antifreeze protects the cylinder block / barrel, circulation pump, hoses, gaskets and the padding from corrosion. Therefore it should be used in 4 seasons. ➢It shows resistance against freezing in winter while shows resistance against overheating in summer. ➢Antifreeze must be mixed with pure water. 50/50 mixture of water and antifreeze is the most suitable mixture. In this way the freezing point can be lowered to -38 °C.