Importance of Oil Viscosity Chart for Car Owners

An understanding of the Oil Viscosity Chart is must for all drivers before buying the can of Motor oil. This will help you in choosing the perfect oil for your car and increase its life.


SAE (Society of Automotive Engineers) has designated the numbers for Motor Oil like :

  • SAE 5W
  • SAE 10W
  • SAE 20W
  • SAE 20
  • SAE 30
  • SAE 40
  • SAE 50

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R22 phase out dates

Hole in ozone layer is discovered over Antarctica in 1985.Because of this hole, Ultraviolet light can reach the earth and harm both the humans (skin cancer) and plants. In 1987, USA and other developed nations signed Montreal Protocol as an effort to protect ozone layer by reducing the use of CFC and HCFC .In 1993, the Schedule to end CFC and HCFC are announced. The production of CFC ended on 1996 and all ozone depleting substances (HCFC including R22) will face a complete ban on 2030.

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Pressure Temperature Charts for R410A, R22 and R134A refrigerants

Pressure temperature chart or PT chart is one of the most important tool to evaluate system performance or diagnose problems.Technicians can use it along with metering
gauges to check the proper functioning of Air conditioner (AC) Systems .Below you can see the PT charts of most important refrigerants :
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Questions to ask before buying refrigerants other than R134A for Car AC



Many car manufacturers will not cover your car parts under warranty if you use any refrigerant other than R134A.So just check all the details with your manufacturer before opting for any refrigerant blends other than R134A.

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Refrigerant blends or substitutes other than R134A for car ac

EPA has approved below refrigerants under its SNAP (Significant New Alternatives Policy) Program as an alternative to R12 in car air conditioners other than R134A .You must buy only EPA approved refrigerant if you want to use a refrigerant blend other than R134A.

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A to Z of Refrigerant leak detectors

Leaks increase the cost of running air conditioner systems as it reduces the cooling efficiency and in turn increases the electricity consumption. Another adverse effect is on ozone layer. All systems leak refrigerant. One pound in two years is acceptable but if it leaks more than that, we need to repair the leak.


Refrigerants are covered under European fluorinated gas regulations (F GAS REGULATIONS).Check below points

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