DENSO Compressor Oil Balancing

Ask An Expert: Oil balancing ensures the correct amount of oil is maintained in the a/c system when the system is flushed or components are replaced.
In this video, we share the correct procedure to ensure system longevity.

[@boris9331]

This exact procedure only applies if the system has not lost any oil. Actual conditions differ. This does not apply if the system has had leaks which resulted in oil loss, which often is the case that causes compressors to fail and a replacement required which could have decreased the overall oil amount in the system. Example 10PA series pumps / I ensure about 100ml goes in every compressor that I physically fit in the car. Run the system once various loads, then let idle with A/C on for a while at high fan speed which tends to return more oil to pump. Recover and remove compressor, then check oil. If very low, you know you will have to add a decent amount to actually balance the system. Example, a system with a large leak could only have a very small amount such as a few drops or maybe 5ml come out of the compressor and the rest of the system may have had hardly any oil left, you sure as hell don't put a brand new pump in with that low amount of oil in. As such doing the oil balancing in this case would give you a overall low oil amount and in this case the right thing to do is add 120ml of oil in - keeping in mind in some large or custom systems you can't add the entire oil charge for the system in the actual pump if need be and you have to split it into another component. Also 120ml that comes with the new Denso compressor (allthough it might physically work and perhaps still last) is not the correct amount for the whole system this is wrong, many systems have much more than 120ml , often 160-230ml in the entire system, often if you read many Toyota service manuals from many larger cars you will see 8 ounces is common spec.

[@jimmyfaherty8588]

my compressor came with the required amount for the "compressor. my 3 once. my system requires 20. I'm replacing the accumulator, cleaned the condenser. I'm having to guess what's left???

[@MrTheHillfolk]

My compressor seal went ,but I saw the spot of oil on the floor under it. Haha ,I figured to pour out oil on the floor and measure that to see how much was lost 😂 Otherwise it'll be a crap shoot, hopefully I can get it close, and close enough to live.

[@byugrad1024]

Why on earth would anyone service an AC system that did not ever leak in the first place? This procedure seems reliant on a preventive type of care that cannot be practical or reasonable to most owners. In reality, AC systems are only worked on when they are malfunctioning. Breaking the seals (and shraeder valves) almost guarantees a future failure anyways.

[@randallbowdre8167]

BMW and many others are running into this issue with 1234yf The early machines did not have an "inject oil" feature. So every time someone recovers the system a little oil is lost. eventually there's no oil & the compressor fails, especially on EKK systems.

[@moseschien1499]

A very informative video regarding one of important component car aircon system. May I know how long we should add or change the compressor oil?

[@sebastienz.5720]

What will i do, if my old compressor is empty ?

[@miguelsacon9598]

Hola buenas tarde saludo desde ecuador tengo una inquietud quisiera saber q tipo fe aceite lleva un compresor denso es electronico es recomendable usar pag 46 ya q es imposible localizar el de su marca espesifica

[@multiomer1997]

im confused shall i buy denso or sanden. the sanden has needs less oil 75cc instead of 110cc from denso.

[@fuhkoffandie]

Thank you my friend. With a entire internet full of absolute useless BS information, your video was clear, concise, and straight to the point. This has helped me immensely. thank you my friend. I now only use Denso replacement compressors, instead of all those bitch brand.

[@JoeBro3794]

So do you really need to drain the oil out of the new ac compressor ?? I had bought a denso ac compressor specific for my suv.

[@onemoremisfit]

Questions: That small plug on the bottom of the unit where you drained the oil, is there a seal on that plug that must be replaced if disturbed? The plug on my Denso unit also looks unusual, as if it were a safety relief valve of some sort, is that the case? I drained my unit thru the line ports by holding it line ports down over a container and rotating the shaft slowly until all oil stopped flowing out, because that seemed to work OK and I was not sure about disturbing that plug. Then I refilled it the same way thru the suction line port, again no problems.

[@densoaustralia136]

Hi, Thank you for your query. The pressure relief valve must not be removed. The process you explained sounds correct. You should also turn the compressor by hand before fitment and follow all fitment run in procedures by the car maker.

[@JoeBro3794]

So do I really have to drain the oil out of the new denso ac compressor ? Because when I bought the ac compressor it was to fit my subura Tribeca

[@kelbymorgan]

The control valve connector was leaking on my compressor on my 2004 Jaguar XJR. How much oil/what type do I need to use?

[@yasharenner6681]

There was only 30 ml of oil in my old compressor. The new DENSO compressor comes prefilled with 7.4 oz. Is it possible that the rest of the oil is still in the other AC system components? That seems like a lot of oil. Shouldn't most of the oil be in the compressor?

[@ghostridergr8259]

what happen if we lost oil and we want to feel with new?? we must take out all old oil and after clean the system with hi flow nitrogen in pipes?

[@tonyperea8378]

Notice when the system ac r134 lost for leak no found,old etc oil more 90% you want change compressor should charge 120ml oil pag 46 like new denso i think ,send me opinions,saludos desde Mexicali baja California

[@adriancocirla6545]

Compresor GQ2 de pe corsa D cit ulei ii trebuie.multumesc

[@mutatioveritas4559]

Picked up a DENSO compressor for my 2006 Honda Civic Sedan along with what I understand to be the most common components to do a replacement (new condenser, drier, and expansion valve) and insure that I'm not cycling any old junk in the lines through the new compressor. Will be getting the system evacuated of all coolant and oil before replacing these components. The only thing I'm not replacing is the evaporator, which is a major pain to get out and replace. Am I understanding correctly that with the system evacuated and these 4 new components, oil balancing will not be needed? e.g., New compressor, condenser, drier, and expansion valve means the oil in the compressor is adequate for the system? Or will I be off and need balancing due to the evaporator not being replaced? 🤔 Thanks!

[@innocentbystander6]

The NEW compressor may come with more or less oil than what your system calls for. It's best not to guess and flush everything that is not being replaced to remove all the old oil and contaminants. Look up your car's AC system oil requirement and make sure you put only that much in your new compressor.

[@mutatioveritas4559]

@@innocentbystander6 Thanks for the reply! It's interesting because the compressor I got came with a tag that says, "Oil balancing is NOT needed when installing compressor on the vehicle A/C system." Tracking down the Honda repair manual, it notes, "Since the oil separator is equipped inside the compressor for this vehicle, oil drainage is unnecessary at the time of compressor replacement." Does that change things at all? 🤔

[@kenank7476]

It was a good introduction. thanks. 🇹🇷

[@supercharged2414]

I have installed a new Denso 471-1145 compressor, a new drier and new hoses in my 93 4Runner. I vacuumed it down and tried charging it. It wouldn't take a charge and the compressor started to rattle. I pulled the compressor and took the top plate off, turned it upside down and not even an ounce of oil was in it. I added 3 1/2 ounces of mineral oil and reinstalled it. Today I put a new evaporator and expansion valve in it. I am ready to vacuum it and try charging it again. Where did the oil in my new compressor go? Why did it rattle if it came with oil in it? I tried draining oil out of the evaporator. None came out and i flooded it with brake cleaner and poured the evaporator out in a can. A few droplets of oil were in it. I then turned my old compressor upside down and no oil came out. I left it overnight and about a half ounce drained out. The old compressor was barely making any noise and didn't rattle like the new one did. Now i am totally confused where the new compressor oil went to. Is it all in the new drier and old condenser? Is 3 1/2 ounces of added oil to the compressor too much or not enough? If i just added the amount of oil in the old compressor it would have been 1/2 ounce. I wish I would have checked the quantity of oil in the new compressor but i didn't. What should I do next? I am totally lost on where all the oil went. Please help.

[@supercharged2414]

I know this is a 2 year old video most likely not responded to when new questions are asked. If i follow the instructions on this video I should empty out my new compressor and put it on empty since my old compressor is empty yet wasn't making noise when removed.

[@kodimah8577]

@@supercharged2414 I hear that not all Denso units are shipping with oil and that it's best to check/drain it always. Sometimes they need oil added.

[@supercharged2414]

@@kodimah8577 I did get it working and it is quiet. I learned my lesson about checking the oil quantity before installing. They say it comes with oil but all 7 ounces couldn't fill up the condenser for no reason which is the only part i didnt replace. . I only put half the required amount because i was thinking 7 ounces of oil had to go somewhere and 10 1/2 ounces would be a lot of oil. You heard some were shipped dry by mistake?

[@hassanabualrub4538]

where can i find denso solinoid valve original for toyota why denso not sell part ??

[@danieldyles1988]

Just bought a denso to replace my compressor and I’m replacing the condenser and receiver drier as well. My question is do I need to add oil to these new components too? Or will the unit come with the complete amount

[@densoaustralia136]

Hi Daniel, The DENSO compressor will come with the correct amount of oil for the system but be sure to follow the car makers fitment and repair procedures (there may be some systems that have duel evaporators or drink coolers that may need addition oil.). Thanks for your question.

[@danieldyles1988]

DENSO Australia thank for the reply! I just put everything on yesterday. Blowing snowflakes out now.

[@leiladaquil6587]

ehy there is no oil level site glass in ac compressor?

[@mohammedfoaadasd2975]

How many ml is a Denso k101 compressor on a 2jz engine? The car has front and rear air conditioning

[@RossWilliamsDC]

i, I am replacing my compressor, condenser, dryer and evaporator (all Denso) in a 1990 toyota pickup. It was converted from R12 to 134a many years ago. Will the new compressor ( DENSO 4711142) have the correct amount and type of oil in it for a 134a system? Also, how do I determine the correct amount of 134a to add? Many people online say to add between 75 and 85% of the R12 amount. Thanks.

[@owurakuobeng1148]

Will the denso ‎471-1529 compressor fit for 2013 bmw X1 28i 2.0L N20 engine?

[@saeedbahaj5568]

how to balance a system with an overcharge of oil ? is there a way other than flushing ? thank you !

[@densoaustralia136]

Hi Saeed, The only way to be sure on the correct oil quantity is to empty the system of oil and fill it with the correct amount. Unfortunately there is no other reliable method. I hope this helps :)

[@mohamedalsharif5100]

How can you differentiate between original and counterfeit ac compressor?

[@frostxlegendzx5798]

denso products are oem

[@mosess3940]

What type of oil do I use on my new denso compressor?

[@genericusername1365]

Usually PAG-46 which is the same as ND-8.

[@denisx9553]

I’m replacing the ac compressor and the condenser. Mercedes factory service manual calls for an additional 20 ml of oil in case of the condenser replacement. My question is do I have to put 140 ml of oil since it requires additional 20 ml of oil? Also, the brand new denso compressor is prefilled with 120 ml of oil and it matches exactly with the oil capacity listed in the MB manual. Thanks!

[@densoaustralia136]

Hi Denis, If the Mercedes manual states that the system hold 120ml of oil and the DENSO compressor contains 120ml of oil there is no need to add the extra 20ml. I suspect that the adding of 20ml would be if you were only replacing the condenser. Be sure to follow the car makers repair procedures.

[@hammedhordunhayo1785]

What can cause compressor to be overheating

[@thomasliontos6005]

Hello daniel im tom from greece,my denso compresser 10PA20 is locked,it wont budge i dont see any oil or freon leaks can you tell me what can be the issue,thanks for the video nicely put!

[@biboyravos4522]

bearings are likely shot

[@mohammedalbrashdi7328]

Approximately how many ml of that oil?

[@densoaustralia136]

Hi Mohammed, the DENSO compressor comes pre-charged with 120m of oil.

[@kennethjohndesouza2251]

How often must one change the oil compressor

[@biboyravos4522]

no requirement to replace oil

[@tanzaniacarschannel6975]

Why variable compressor with model no 5se09c don't last? Am living in Tanzania, Dar es Salaam city, this is city is located in coastal area where it is too hot and humid during day. To many cars in my city that come with 5se09c compressors, or any other clutchless compressors, these compressors tend to fail very early and easy even after few days of their replacement. This problem is not common in my place for cars that come with fixed displacement compressors. Can you help to understand what to do so that my 5se09c compressor to last? I thought of modifying the ac system by installing fixed displacement compressor with external clutch though i don't know if it can work...am tired of frequent replacements of 5se09c compressors and the condensers.

[@TerryKim-w9l]

is it possible to remove compressor oil by Flushing with aircon machine?

[@biboyravos4522]

no

[@raypelletier9920]

my system is 15 years old, when do you change oil or add ?

[@genericusername1365]

Only when replacing components. If nothing has been changed and everything is working, then you don't need to change the oil.

[@cowsgoloka]

​@@genericusername1365thankyou. I was looking forward for this answer But doesn't compressor get oil get contaminated with metal particles after constant friction over 10 years or 1 million hours of usage. (If nothing fails)

[@genericusername1365]

@@cowsgoloka I replaced my compressor at 185K miles. I now have 443K miles and I haven't done anything to the AC for the last 258K miles. It's the same oil that's been in there since then and it works fine. If you do the job correctly, then the oil will last a long time. I installed a Denso compressor, replaced the drier desiccant, pulled a vacuum for 1.5 hours, then properly installed the refrigerant without any outside air entering in the system. If you do it correctly, it will last a long time.

[@Sam-lim]

Good afternoon I have SV07C-10S 11C 4PK 12V (NEW) COMPRESSOR PM-0711.N How much ML should I add? And how much ML oil should I put in for this maintenance after 3 to 5 years?

[@wethepeople4591]

I’m changing the compressor, drier and high pressure hose. So I have to drain oil from new compressor and match to oil from old compressor

[@densoaustralia136]

Hi Roque Rivera, as long as you match the oil amount (as shown in the video), the same as the old compressor, then it should be okay.

[@anichols5845]

Watch some more KZbin videos, there’s lots of them with way more info than this one. This video leaves you with more questions than it answers.....

[@wethepeople4591]

@@anichols5845 Thanks, all taken care of.

[@simplelifesimplicity8911]

Not the best advice I think. How about if the old compressor was running near dry or previously overfilled or new compressor is a different brand?

[@densoaustralia136]

Hi, The only way to be sure on the correct oil quantity is to empty the system of oil and fill it with the correct amount. Unfortunately there is no other reliable method. And be sure to follow the car makers repair procedures.

[@B_Rael]

@@densoaustralia136 Can you make a video on how too do just that

[@All-about-everything]

Exactly

[@All-about-everything]

@@densoaustralia136 sounds like you guys need to rework your system

[@mrroboto1660]

@@densoaustralia136 IMO, this simply cannot be correct, there far to many factors involved in how much oil is in the correct system. Was there a leak? Did a guy drop the compressor on removal and spill oil? Who worked on this car before me? Ect… This was a good video and well done but anyone could do this and be way off at the same time based on what I and others have stated as concerns. I’m not a fan

[@aladwanit]

So what if the old one is broke down already ?

[@densoaustralia136]

Hi aladwani mr, An approved car A/C repairer will be able to assist you and advise on components that will need to be replaced.

[@supachai7441]

Denso AC compressor for lancer ex ???

[@311superfly]

The old one FAILED how can you trust just adding Same amount?

[@TheRaularya]

What if I took my old compressor and had no oil and my new compressor has 3 ounces of oil and requires 11 what should I do

[@densoaustralia136]

Hi, Drain the system and fill, that is the only way to be sure of the amount of oil in the system. Empty it and then fill with the correct amount.

[@maicodaniel921]

I need to work with you please

[@ivanpilipenko2378]

Can you say, which viscosity is nd-6 oil? I need to repair old r12 a/c system, but can't find nd-6.

[@Garyscott7]

Some Ting Wong with this advice. On my 05 Ford Escape the Ford spec is for 7oz. of PAG46. I replaced the accumulator (held almost 3oz. when old one was drained), condenser, and flushed the system . I installed a new Denso 471-8135 compressor, which their Denso spec sheet claims it came from the factory with 1.5oz. of PAG 46. This video is saying the 1.5oz. already in the new compressor is all my new system needs. That would leave me 5.5oz. short. Any warranty claims aside, that advice would cook my new compressor in short order.

[@MrConspark]

Still some oil in the evaporator, did you remove the O tube when you flushed the system

[@PaulHayman-tq5kb]

Toyota Nippon Denso are the best quality products and will out lasted the genery motors AC are poor quality if you 2summers you are doing well

[@zainalahmad9309]

What's a difference between 17c and 15c compressor..? Can u please explain a little bit..?

[@densoaustralia136]

Hi, The difference between these compressors is: 17c = 1700cc capacity. 15c = 1500cc capacity. For further information visit our resource page: www.denso.com.au/resources/

[@cowsgoloka]

​@@densoaustralia136How often we should change oil in the car's Life time if there no leaks or replacements till now 12 year old car with 100k miles run with AC on?

[@hubercats]

Thank you for this helpful tip. Are Denso compressors used on 2006 Subaru Outback 3.0 engines based on piston or rotary pump technology. I’m trying to understand why the high pressure gauge on my A/C manifold set fluctuates wildly when I increase from idle to 2000 RPM (the needle is a blur and is jumping full scale). Some web sites have suggested this is normal for piston designs, hence my question. Thanks again!

[@hubercats]

I should add that my A/C is working well, it’s just the gauge behavior that is puzzling me.

[@densoaustralia136]

Hi, The compressor should be a scroll type. The compressor we have listed for this application is a “SCSA08C” (Specs can be viewed on our website under parts search). It would be a good idea to ensure the system is vacuumed and refrigerant charged to specification. Also ensure you manifold gauges are serviceable. After that it would be easier to diagnose if there is a problem. We hope this helps.

[@randallbowdre8167]

So what I gather from this is if you have a compressor that failed due to no oil, drain all of the oil from the new compressor so it fails too. that's why denso is still in business. I'm going to error on the side of caution & just install my compressor with a full charge of oil.

[@neil121886]

If your old compressor failed from no oil you would have to flush the whole system which means you would have no oil remaining in the system anyways. So in that case yes you would install with the full amount of oil in the compressor

[@malcookie]

Can anyone tell me whats the difference between 10P15C and a 10PA15C compressor?

[@aladwanit]

There big difference, between the 4 v cars and 8 v ,,, small cars and big cars like SUV most of them has rear a AC

[@densoaustralia136]

Hi Malcookie, 10P15C & 10PA15C difference are listed below: P: Basic Swash Plate Type, 6-cylinder and 10-cylinder PA: Improved P Type (with spines and lip seal)

[@SuperCold]

👍👍👍

[@hemo930]

Clutch less compressor (Variable Displacement)help me growling Sound from AC compressor during idling with AC off , after switching ON AC no sound at all cooling is good but as I switch off AC or cabin reaches desired temperature sound again starts, is this bcoz of low compressor oil ?? (when refrigerant flows compressor has enough oil to lubricate and when AC off compressor doesn't have oil for lubrication as refrigerant flow stops(my theory)).. hyundai elite i20 any one help...pl

[@Valledesolado]

I have the same problem...

[@hemo930]

@@Valledesolado incase u get solution pl post it...thnx

[@hemo930]

@@Valledesoladosame sound?? kzbin.info/www/bejne/aZPHp61sjrZorZY

[@densoaustralia136]

Hi, The growling sound could possibly be a few things but I suspect that you will need a new compressor. Any unusual noise from a compressor is most likely cause by internal damage, you should go and see a reputable car AC repairer. Lack of lubrication and refrigerant can be one cause for compressor damage.

[@hemo930]

@@Valledesolado hey Did the problem resolve...

[@Lordosvk]

IMO wrong... the amount of oil inside old compresor can be not right. it should be write on new comressor how much exact compresor need oil.

[@jaber20874]

Toyota camry form 2012 to 2017 the ac condition fail early. My car Toyota camry 2017 with 61000km compressor fail because pcv valve jam because freon and oil become dirty and black color so I change compressor with condesor and clean tube and now it is OK but I am worry same problem come early again. I think cluth compressor better than this compressor like in camry 2005

[@geoffbanks6197]

If you ever try to get info on how a Denso injector pump actually controls diesel fuel flow via the vehicle's ecu then you will understand why I hate Denso! Don't bother trying to ring them for info, you won't get it!

[@rodneybutch9309]

Old compressor had blown oil out,the new Denso had no oil what so ever,I ask to two mechanics one said 7 oz The other 5 oz Called Denso they said 10

[@densoaustralia136]

Hi Rodney, DENSO compressors should contain oil. Would you be able to share the part number so we can check the specification?

[@rodneybutch9309]

@@densoaustralia136 Already been on the phone twice with Denso

[@time2kickarse]

How much oil? This video tells absolutely nothing.

[@makavellys]

2006 corolla - how much oil compressor do I need to put?

[@densoaustralia136]

Hi markavellys, For refrigerant charge and oil amount it is best practice to always refer to the Toyota manual listed for your vehicle.

[@jeevanc7357]

❤

[@electronicasystem5954]

Hi

[@electronicasystem5954]

I am work AC

[@angelojohnson1537]

I bet my man’s a murderer in his off time.

[@Atonement-]

Who else thought this was going to be a woman lol... no offense Danny! ✊

[@Washifzain]

Denso compressor not good

[@genericusername1365]

BS.

[@Washifzain]

Your compressor broke after 15 days of use, your company is a bad company

[@genericusername1365]

Oh yeah, sure. I've been using Denso products for years and have never had issues with them. Toyota, Honda, and several other automakers use parts directly from Denso. If your Denso compressor broke after 15 days, it's because it was installed incorrectly or there were some other factors.

[@Patrickhit87]

That’s so fking dumb. My old compressor is low on oil from a major leak. How the fk am I supposed to have the proper oil amount in my new compressor now. Gfys

[@neil121886]

You need to flush the system so there's no oil left. Then add the full amount for your car

[@Patrickhit87]

@@neil121886 haha true. I fixed the leak myself, recharged it and sent it. It’s a 94 ls400, hopefully the system doesn’t fail on me 😂😂 no more leaks. Ironically I had my favorite car my 01 tundra taken to the mechanic to properly get a quick easy ac leak repaired, and it’s still leaking

[@reneg1366]

Why "pretend" to pull it off the vehicle.... 🙄