a/c recharge
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Junior Member
Joined: Feb 2014
Posts: 16
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2000 e55amg
a/c recharge
Looking to recharge my a/c...can I do it my self ?(meaning will one of those autozone recharge ac cans do it ?) A/c works fine but its not blowing cold enough so time to recharge that bad boy. Just looking to see if that can be done at home ?
Member
Joined: Jul 2015
Posts: 100
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2005 S500
I dont see why not, as far as what kind of Freon our cars use, I dont know if its standard 134a, if it is, find the plug and refill.
Unless you want to go to the stealership and pay with your first born for payment lol
Unless you want to go to the stealership and pay with your first born for payment lol
Super Member
Joined: Jun 2016
Posts: 589
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From: Snowville, ID
W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
Bringing this thread back from the dead.
Searching for A/C recharge and it looks to be a very simple procedure but there isn't much info on W220 chassis. Most threads mentioned A/C recharge isn't a DIY job.
Under filled and over filled R134a refrigerant will cause problems. And there's questions on PAG 46 oil.
Just for kicks, I asked the auto part store on how much R134a I need for the S600 and the answer was 32.4oz. This is why I don't trust the oil change places either.
Looking up WIS, 950g R134a for W220 without 582 and 1050g R134a with 582 but I can't find anything on PAG 46 oil. Does anyone have info on how much PAG 46 oil to add?
Searching for A/C recharge and it looks to be a very simple procedure but there isn't much info on W220 chassis. Most threads mentioned A/C recharge isn't a DIY job.
Under filled and over filled R134a refrigerant will cause problems. And there's questions on PAG 46 oil.
Just for kicks, I asked the auto part store on how much R134a I need for the S600 and the answer was 32.4oz. This is why I don't trust the oil change places either.
Looking up WIS, 950g R134a for W220 without 582 and 1050g R134a with 582 but I can't find anything on PAG 46 oil. Does anyone have info on how much PAG 46 oil to add?
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Joined: Jan 2008
Posts: 6,151
Likes: 533
Mercedes
Bringing this thread back from the dead.
Searching for A/C recharge and it looks to be a very simple procedure but there isn't much info on W220 chassis. Most threads mentioned A/C recharge isn't a DIY job.
Under filled and over filled R134a refrigerant will cause problems. And there's questions on PAG 46 oil.
Just for kicks, I asked the auto part store on how much R134a I need for the S600 and the answer was 32.4oz. This is why I don't trust the oil change places either.
Looking up WIS, 950g R134a for W220 without 582 and 1050g R134a with 582 but I can't find anything on PAG 46 oil. Does anyone have info on how much PAG 46 oil to add?
Searching for A/C recharge and it looks to be a very simple procedure but there isn't much info on W220 chassis. Most threads mentioned A/C recharge isn't a DIY job.
Under filled and over filled R134a refrigerant will cause problems. And there's questions on PAG 46 oil.
Just for kicks, I asked the auto part store on how much R134a I need for the S600 and the answer was 32.4oz. This is why I don't trust the oil change places either.
Looking up WIS, 950g R134a for W220 without 582 and 1050g R134a with 582 but I can't find anything on PAG 46 oil. Does anyone have info on how much PAG 46 oil to add?
as I suggested in the other thread , you may just be a bit low on refrigerant and one of those $30 cans with the gauge and the hose will work fine to top it off , I've done that many times ,it takes 3 minutes .
Ive never done the ful evacuation and refill
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From: Covina,CA
2010 W204, 2014 W212, 2015 W222, 07 SAAB 9-3, 2016 AMG GTS
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MBWorld Fanatic!
Joined: Nov 2010
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From: Welwyn, Herts, UK
2006 S600
I've used top-ups before and they work fine as long as the AC is still pressurized and working OK. Therefore air won't get in and add moisture.
Once the refrigeration is gone, you need to replace the receiver/drier, evacuate, and refill. Not a DIY job - and I'm the first to advocate DIY everything. .
Nick
Super Member
Joined: Jun 2016
Posts: 589
Likes: 60
From: Snowville, ID
W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
I just looked up the price for A/C receiver drier. It's $180 for MB and $65 for Behr.
The 10cm3 compression oil equates to 0.34oz?
The 10cm3 compression oil equates to 0.34oz?
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Joined: Dec 2012
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From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
Some generalizations - YMMV.
If you lose the refrigerant from a slow leak, you will lose very little of the oil, will probably not need to add any.
If you lose the refrigerant from a very fast leak (e.g., blown hose), you will lose much of the oil, and will need to add an unknown amount.
If you change components, you will lose some oil with each component, and will need to add some oil. This is what is referred to in the WIS page shown - and yes, 0.034 US ounces is the approximately correct conversion. (As an example ONLY -do not use for the W220! Porsche says that on a 928, the oil is approximately distributed: compressor - 40%; evaporator - 35%; condenser - 15%; receiver/dryer & lines 10%.
Only if you change the compressor and flush the rest of the system will you need to add the total amount of oil. You must determine how much oil is included in the compressor that you procured!
In the USA, a certification is required to purchase most refrigerants, but not R-134a.
If you lose the refrigerant from a slow leak, you will lose very little of the oil, will probably not need to add any.
If you lose the refrigerant from a very fast leak (e.g., blown hose), you will lose much of the oil, and will need to add an unknown amount.
If you change components, you will lose some oil with each component, and will need to add some oil. This is what is referred to in the WIS page shown - and yes, 0.034 US ounces is the approximately correct conversion. (As an example ONLY -do not use for the W220! Porsche says that on a 928, the oil is approximately distributed: compressor - 40%; evaporator - 35%; condenser - 15%; receiver/dryer & lines 10%.
Only if you change the compressor and flush the rest of the system will you need to add the total amount of oil. You must determine how much oil is included in the compressor that you procured!
In the USA, a certification is required to purchase most refrigerants, but not R-134a.
Last edited by wallyp; Mar 30, 2017 at 08:53 AM.
Super Member
Joined: Jun 2016
Posts: 589
Likes: 60
From: Snowville, ID
W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
The procedure for replacing the receiver drier looks simple 
but I decided to push it out to the later date.
I went ahead with 3 cans of 12oz and 25cc of PAG 46 last night. It was a fast leak and I didn't know how much were lost. Don't ask me how I knew about the leak.
Here's the pressure level before the pump down
It took about 6oz of refrigerants for the compressor to kick in and I got 42F air blowing by the time the 1st can went empty.
People don't normally respond to AC refills until the system is no longer blowing cold air. With 1/3 of capacity, the system works much harder and that isn't good.
but I decided to push it out to the later date. I went ahead with 3 cans of 12oz and 25cc of PAG 46 last night. It was a fast leak and I didn't know how much were lost. Don't ask me how I knew about the leak.
Here's the pressure level before the pump down
It took about 6oz of refrigerants for the compressor to kick in and I got 42F air blowing by the time the 1st can went empty.
People don't normally respond to AC refills until the system is no longer blowing cold air. With 1/3 of capacity, the system works much harder and that isn't good.
