Answer and Explanation: The lubricant which is used with the refrigerant R-134a is
R-134a systems primarily use three viscosities of PAG oil: PAG 46, PAG 100, and PAG 150. Technicians commonly use PAG 46 and PAG 100, while PAG 150 is specific to some GM compressors from the 1990s and early 2000s.
Polyol ester (POE): this refrigeration oil is the most common type of synthetic lubricant being used with HFC refrigerants, like R134a. Polyalkyleneglycols (PAG): these refrigeration oils have a high viscosity index and thermal stability.
PAO oil for refrigerant R134a, and in some cases for refrigerant R1234yf and others Can be used as an alternative to the various PAG oils that are offered for R134a (has the advantage of not being hygroscopic, i.e., unlike other oils, it does not absorb any moisture from the ambient air).
R-1234yf refrigerant. To date, most auto manufacturers are using the hydro fluoro olefin (HFO) refrigerant R-1234yf as the replacement of choice for R134a.
The chemical stabilities of copper, steel, and aluminum have been tested and confirmed as acceptable for use with Freon™ 134a and lubricants. Acceptable plastics and elastomers have been found for use with existing CFC refrigerants.
Why Is R-134A Being Phased Out? When Is the Phaseout Expected to Conclude? Like a lot of '90s relics, R-134A has not aged well. It was known then that 1,1,1,2-tetrafluoroethane could potentially contribute to acid rain and that its ozone layer depletion potential was high.
Air compressor oil is always the best option for your air compressor. However, if you're in a pinch, you can use either hydraulic oil or automatic transmission fluid (ATF). However, these won't work well for all compressors and may only work under certain circumstances.
No. The recommendation by manufacturers of air compressors and the advice of air compressor experts is to use air compressor oils without detergents. Since 10W30 contains detergents, it should not be used. furthermore, the weight and viscosity will not meet the manufactures specifications.
Compressor oil. Lubricant formulated for automotive air conditioning systems.
Answer and Explanation: The lubricant which is used with the refrigerant R-134a is Polyolester oil (POE oil). Polyester oil is a type of synthetic oil. R134a does not mix well with mineral oils.
Polyol Ester Oils (POE): POE constitutes the second generation of lubricants that were developed for use with HFC's (R134a, R152a). POE oils are excellent lubricants, less hygroscopic than PAG (Poly Alkylene Glycols) and chemically more stable than PAG when in the presence of water.
When R-134a was introduced to the A/C industry, synthetic lubricants known as PAGs and Esters were chosen that used viscosity ratings known as ISO (International Organization for Standardization). The most popular viscosity for Ester today is an ISO 100.
The fact of the matter is unless you are changing out the or another component in your A/C you probably will never have to worry about recharging PAG and Ester oils. That being said, let's take a look at these A/C compressor oils in more detail.
The mineral oil when used in R134a is not miscible. The mineral oil will turn to a thick wax-like substance that floats on the liquid in the evaporator and coats the tubes with a layer of wax. You will need to use a solvent to dissolve the mineral oil.
Hydraulic oil: Hydraulic oil possesses multiple qualities that make it an acceptable substitute for air compressor oils. It has a lower viscosity in colder temperatures, which means it can flow more freely given its low density. For this reason, hydraulic oil works best when temperatures are lower.
PAG oil: Polyalkylene Glycol or PAG oil is a man-made lubricant used in both R134a systems and the latest R1234yf. There are several types of PAG oil based on the viscosity of the oil -- PAG46, PAG100 and PAG150 -- and the type of refrigerant it is designed for.
Non-Detergent – if it's compressor oil, it should automatically be ND. Viscosity Grade of 20 or 30 SAE – 30 in normal environments, 20 in cold temperatures.
While you could technically use motor oil to operate an air compressor, that oil type typically contains detergents that will cause carbon build-up within a compressor unit. Instead, oil manufacturers have created oil specifically for air compressors that don't include detergents.
Gear oil is not hydraulic oil, a spindle oil is not a compressor oil which is not a motor oil and so forth. Gear oils will have anti-wear or extreme pressure additives in them. Compressor oils may have completely different additive packages with special rust and oxidation inhibitors.
R513A was developed as a replacement refrigerant for R134a. R513A is a modern, non-flammable refrigerant designed to replace R134a in a wide range of applications. It provides a sustainable solution for both new systems and retrofits.
New Restrictions imposed by EPA as part of AIM Act: The AIM Act is a Federal nationwide rule phasing out the use of global warming materials. As part of that effort, EPA is now banning the use of 134a in aerosol products as of 1/1/2025. There are excepted products that are allowed to use 134a until 1/1/2028.
R-454B is the new refrigerant in 2024. By 2025, the EPA's required phaseout of R-410A will be in full effect, with production, importation, and distribution no longer allowed. HVACR businesses must be evaluating their current choices in coolant and ready to make the jump.