Are all Air Conditioning Compressor Oil made the same ?

Are all compressor oil (PAG) made the same?

PAG ( Poly-Alckylene-Glycol ) is the chemical name for compressor oil used in R134a car ac system.  But all compressor oil made the same?

I’m sure most car owners change their engine oil frequently.  Service interval usually for semi-syn oil is 5000 km & fully syn at 10,000km.  These oil quality & grade varies from brand to brand & what is important is the additive that is blended with the base oil.  The quality & quantity of the additive determines the price & quality of the drive.

PAG oil with good quality additives can extend your compressor life & keep your ac cold longer

PAG oil is quite similar in nature.  They are fully synthetic, fully soluble with R134a refrigerant & most important there are additives in there to help maintain the operation of the compression & protection of the seals & O rings.

Match car manufacturer’s viscosity specifications

PAG oil comes in different viscosities - 46, 100, 125, 150 & esther to match the specifications required by the car manufacturer.  If the amount of oil, viscosity & amount of refrigerant is correctly “mixed’ in the ac system, you’ve get a fantastically cold ac...period.

PAG absorbs water & air easily

PAG oil are hygroscopic, it absorbs water & air readily.  The way it is stored & added into the ac system will affect the water & air content in the PAG oil.  Oil with excessive water & air can cause damages to the ac components.

New HFO1234yf Air Conditioning Systems

With the introduction of the new HFO1234yf refrigerant, you would need a compatible 1234yf compressor oil.  The 1234yf refrigerant promises a much lower Gobal Warming Potential (GWP) of only 15 compared with R134a, which has a GWP of 1500 !

Insist on good quality PAG oil the next time you have your compressor oil replaced.

Thank you for reading my blog.

Cheers!

David

Hot Car Cabin - where does the heat comes from ?

Hot car cabin, where does the heat comes from?

Modern cars are much more luxury in their fittings now a days.  Leather interior trims, leather seats, luxury carpets, bigger dash boards to house all the displays & gadgets & the list goes on.

Have you sometimes wonder? In the good old days when I sat in my father’s red Toyota Corolla in the 1970s, those cars do not come with AC.  We simply open the windows & let the wind blow us cool or even with the windows closed on a rainy day it still feel not too hot.  

Why can’t we do the same now?  Some people may say, its the global warming!  Yes that must be one of the attributing factors.   Lets have a closer look at the picture above & I think it answers the question “ where does the heat comes from? “

This means we need the car’s AC to perform efficiently & at its optimum if we want to see that heat removed from the cabin.

Thank you for reading my blog.

You can do your part in anyway, big or small, to save our earth.  Go Green.

Cheers!

David

How to measure the degree of "cold" in a car's air conditioning, let the numbers tell

A comfortable air conditioned environment for us is between 20 to 29 degrees C & a humidity range of 30% to 70%.  For example, for the car’s cabin temperature to reach 20 C the corresponding humidity should be at 30%.  To efficiently achieve this level of coldness, the temperature measured just on the surface of the evaporator or cooling coil would be about 2 C.

A quick way to access your car’s ac performance is to wind down both the driver’s & passenger’s side window & set the ac to the coldest mark.  You would then measure the temperature in the ac vent.  A minimum performance standard, the ac vent temperature would be about 8 C or lower, the lower the better.  We have a video to demonstrate this performance measurement.

Keep cool & stay heathy & welcome the hot season!

Thank you for reading my blog.

Cheers!

David

Automotive workshop business - A new concept of car air conditioning services without removing parts & turning it into a profit center

We change our engine oil frequently to avoid expensive overhaul. 

In our car air conditioning, there is a compressor oil that works to lubricate the compressor to prevent it from overheating. 

90% of car AC problem is caused by this compressor oil not change regularly. It is extremely cumbersome & difficult to remove this compressor oil using traditional ways.

With our KoolTec AC Concept, full compressor oil replacement service job can be done in just an hour.  

And what if you can answer & provide a "8 items" report to your customer in just 20 mins for an assessment of his car's air conditioning problems ?

Can you see opportunities ?

( in Indonesia )

Thank you reading my blog.

David

www.autocreativesys.com.sg

90% Of Cars' Air Conditioning Failures Are Caused By Compressor Oil Not Changed Regularly

In the good old days, we frequently see automobiles having to go through overhaul of engine.  The lubricant companies began to educate workshops & car owners to replace engine oil at recommended service intervals.  Now, we hardly see our car going through the cumbersome engine overhaul piece of work.  We diligently replace our engine oil at 5000km or 10,000km. 

                              AWARENESS = ACTION = HEALTHY CAR ENGINE

The primary purpose of lubricants in general are (1) Lubricate to reduce friction (2) Remove frictional heat (3) To absorb dirt.  Over time, it would loose its viscosity, its ability to lubricate & it would turn acidic.  There are now specific service intervals for engine oil, ATF, manual gear oil, differential axial oil, brake fluid, power steering fluid & radiator coolant.  

Replace compressor oil (PAG) every 20,000 km

The service interval for replacement of compressor lubricant is between 20,000 km to 30,000 km depending on the driving condition.  The modern car ac system uses PAG( Poly-Alckylene-Glycol ), which is synthetic, compressor oil & refrigerant R134a.  The PAG oil mixes 100% with the R134a & it flows through the entire system lubricating the compressor.  The amount of PAG oil & R134a a car ac system needs is specified by the car manufacturer & it differs from manufacturers.  

PAG oil - correct amount to use 

Unlike engine oil, where we use a large amount to lubricate(in the range of 4 liters) , the PAG oil used is usually in the range of 70ml to 200ml.  This makes the PAG oil quantity or amount very critical to obtain a cold temperature. Here’s a way to picture this.  If your car engine needs 4L of oil, if we add in an extra 2L or drain out 2L of oil.  This would adversely affect the performance & protection of the engine & eventually lead to serious damages. Too much PAG oil or too little of it would similarly affect the performance of the compressor & its lifespan.

PAG oil replacement - A pain in the ass!

Traditionally, it is a very difficult & time consuming task to remove the compressor oil.  The compressor, condenser, evaporator & expansion valve must be removed & flushed separately.  And the dash board must be removed to get to the evaporator & expansion valve.  Now there is a “Cool & Simple Way to Make your car AC Cold” - KoolTec .  The AC compressor oil can be removed & replaced with new oil in just 1 hour & no parts are removed in the process.  Check out your nearest KoolTec service centres for a free diagnostic check.

Replace your car’s ac compressor oil every 20,000 km to enjoy a cool & fresh cabin & avoid expensive repair cost!

Thank you for reading my blog.

Cheers!

David

www.autocreativesys.com.sg