Yes, you can use Mobil1 75W90, in fact will give you mor protection at working temp, because your W211 has factory installed 75W85. See attachment!!!
Posts by isstay
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If MB uses 75W85 or 85W90, I think that using Mobil 75W90 covers both MB products. May be Mobil1 Gear Oil is not approved for now by MB, but will be in a future. Every time when I open the hood, I see label "MB APPROVES MOBIL1". Mobil1 engine and transmission oils are been approved for long by MB and it is going to be a matter of time that gear oil label to say, "Meets MB 235.7 Spec". By the way, some other company make MB's oils for them, which they sell to people not thinking enough and willing to pay extra for MB brand oil or grease. Every car manufacturing company does this, they will tell you that you have to use their products otherwise you may have problems - it is about profit. Why MB does not make cars like the ones from 70 and early 80, because once you buy they do not see you except for oils and tires, if you go back to them. That is why over 75% of the cabs in Germany were MB E class, not anymore since the stupid merge w/Chrysler group may be in the future this will change again. My dad was a truck driver. He was saying that MB trucks are like a mule - they keep on going with less maintenance forever and you still can see many of old ones from 50 to late 70 running in Africa and Asia. Even the new ones are that way, but not the cars. Why do you thing they change engine oil on those trucks every 90 000 - 100 000 miles (not kidding look the attachment), but on the cars is 10 000 miles - PROFIT, that is why. MB cat is not average JOE's car that why they expect most of the owners to go back and make profit from them, but if you buy truck for business is a different story, and they want you to be happy, otherwise you will buy something else next time. Statistically 90% of the people who own MB go and buy MB next time again, because MB is a name associated with prestige and you want to keep the image you build.
At the end, it is your money and you spend them the way you want. Do not say to someone "do not use this oil, or go and dump the oil which you just putt, because the label does not say "APPROVED BY MB". Look at the facts, thing and then make decision, INFORMED DECISION, as we say in the medical field. Gave the people something that they can see, do not just say MB approval# or part# then they can chose what to do. Those forums are to help people when they have problems, or want to know something in advance, instead I see too much TALK w/o saying anything. I PM to couple of members asking something and guess, they never answer. I think that they run in some problems that I try to avoid asking upfront, but they will not share.
:surrender:
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Since 2001 all E class cars are factory fill w/75W85, no one calls for 80W90 even MB states that 75W85 can be used on previous models which call for 80W90 or 85W90, look at the attachment
(tired of posting same things).
85W90 for the transfer case.
Fuchs oil has lower cSt at 40°C DIN 51562-1 81.5 mm²/s and Mobil has 106 at same temperature. Mobil Delvac Synthetic Gear Oil has MB 235.8 approval with cSt at 40°C of 120, so Mobil1 Synthetic Gear Oil, which differs slightly, and stay between Delvac and Fuchs would meet MB requirements for gear oils 235.7.:dunno::dunno:
Fuchs oil has lower cSt at 40°C DIN 51562-1 81.5 mm²/s and Mobil has 106 at same temperature. Mobil Delvac Synthetic Gear Oil has MB 235.8 approval with cSt at 40°C of 120, so Mobil1 Synthetic Gear Oil, which differs slightly, and stay between Delvac and Fuchs would meet MB requirements for gear oils 235.7.:dunno::dunno:
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This is a b*** s**** my CDI diff takes 1.3L and it is based on the gear diameter if you do not know some are 2.62 ratio some are 3.07. in addition, I hate to repeat myself too. Some people are like donkey on wire bridge, they read something once and that is, not going any further. One of the images I posted is from Star Service DVD for W211. I will repost again, just take you time to look the attachment before start your reply. In addition, it says that all cars are factory-prefilled w/75W85 synthetic oil. I just came back from MB Service department. I ask them if I can buy FUCHS differential oil (75W85) and they ask me for what car is it. Guy check and told me that needs to be order (55$ for a bottle). Hi also offer me Valvoline SYN power full synthetic oil (75W90) 14.95$ what they are using for fill ups or topping. After this I talk to the Service Department Manager about the oil viscosity and he say that any synthetic oil that meets meet API service MT-1/GL-5 EP requirements, can be used if viscosity ranges are been meet.
This is for syn fuchs75W85 not the conventional 85W90
I am running Mobil1 75W90 full synthetic.
85W90 is conventional and I specifically ask for 75W85 and the answer was 55$, plus needs to be order. I do not know and did not ask how much 85W90 is. Dealer is selling Valvoline 75W90 for supplement 15$ a bottle. Star service DVD for USA states that Fuchs synthetic fluid can be used on cars produced even before 2001 (Fuchs become available in 01 and has viscosity index of 144) and you are saying that conventional oil will perform better than synthetic? Why not using conventional engine oil instead of synthetic, will be cheaper? You cannot buy Mobilube LS 85W-90 (viscosity 100) Limited-Slip Gear Lubricant anymore because is been replaced by Mobil Delvac Synthetic Gear Oil 75W90 (viscosity of 140) widely available for commercial trucks that meets MB 235.8 specs, also Lufteknic Porsche web page(http://www.lufteknic.com/Merchant2/...ode=Mobil75-90delvac&Category_Code=lubricants) and Mobil Delvac web page(http://www.mobil.com/USA-English/Lu..._Delvac_Synthetic_Gear_Oil_75W-90_80W-140.asp). The viscosity index for Mobil1 synthetic gear oil is 150. Therefore, 144 and 150 are not that far and you should agree that if the viscosity is the most important for gear oil they should provide same levels of protection. I think that all oil properties are important, for instance, 80W140 has viscosity index of 139, but cSt @100ºC is doubled and at 40ºC is 2.5 times bigger compare to 75W90.
Ok, people everyone who is been following this thread: Please look all the pictures I am attaching and tell me what is wrong whit them? I want answers based on healthy thinking over those pictures posted; not just chewing same words repeatedly, because you are afraid that thinking can gets you a headache.
I do not thing that 85W90 is synthetic (check this web site Mobilube LS 85W-90), it says that: "Mobil LS 85W-90 is an extra high performance, automotive gear lubricant formulated from select base oils and an advanced additive system specifically for limited-slip differentials". It is been around for long time to be synthetic, and it is been discontinued since 75W90 Delvac Synthetic was developed. And trust me I know about oil and gas and diesel prices in EU, that is why I choose to buy W211 CDI, because I can go back if gets to S***** here. I never ask about it because my car according to first picture is calling for 75W85, am I right, and probably this is true for other member's car and especially for you drivbywire. One of your vehicles is same car like mine; correct me if I am wrong. O and by the way, our differentials are Ø210E. I do not argue about 4matic cars or SUVs may be the rear differential needs same oil, or maybe not, I can check if someone needs info. Second and third picture are info about FUCHS synthetic oil called Titan and made for MB, which I want you people to compare to forth picture representing Mobil1 Gear Oil. Now I want to know which oil has higher viscosity at 40°C, FUCHS or MOBIL1.
What the first picture said, according to drivbywire, is that MB fill up our rear differentials with oil that will fail and will cost 3000 to 3500$ in warranty repair for thousands if not hundreds of thousands cars, correct? Why I should not use 75W90 synthetic oil on car prefilled with 75W85? Kajtek1 and paulv are right: MB drop viscosity of the gear oil when they start using FUCHS synthetic, but they gain better protection compare to conventional 85W90 - THANK YOU Kajtek1 THANK YOU paulv. Now at last I want to know which car differential has working temperature of 40°C, I may spend some money to get one of those for my E.
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According to the 2010 MB Fluid application manual, which is actually from 06/05/2008 according to StarTekInfo web page (see picture below), saying 2003-2010 on the bottom not old info, attached by you drivbywire, you ML and GL with or w/o differential locks call for MB Gear Oil Part No. A001 989 33 03 10 - which is 75W85 check posted information by Noodles and also picture posted by me from Star Service, but you probably read the first page only never going further in that manual like everything else we been discussing here. Be very careful, you do not have enough protection there at low temperature with 85W90. You learn one thing and that is it 85W90, even you cannot change your mind when reading something different. In addition, no, my information is probably more recent than yours is, because the picture from Star Service DVD says ®2007 Mercedes-Benz, LLC on the bottom, but I left it out when resized it (can be PM'd upon request). In addition, why you keep changing your opinion: first, you say that 85W90 has cSt of 153, now you are presenting Mobilube HD-A which is also conventional with cSt 184, I think that you did not read the top of the page, where it says that both oils are been formulated from base oils instead of synthetic basestocks. Why do you thing that MB says that the new oil 75W85 can be used on older cars manifactured before 2001 "without reservations". My guess is that they found that it provides sufficient protection when replace 85W90 or 75W90.
All the B*** S**** aside read everything when is presented to you in easy to digest form, do not hold, on things you know, you may learn something, no one knows everything.
THE TRUTH IS BORN IN DISCUSSIONS, but constructive discussions.
I am suggesting that you go back and READ, READ AND READ MANY MORE TIMES this thread from page one, and take your time to check all pictures and links. Also read the information, which you have, completely, DO NOT CONFRONT YOURSELF.
So far, you are not being able to prove why synthetic oil should not be better than conventional even if you use MB synthetic oil recommended by them with lower viscosity than Mobil1 or Valvoline.
All the B*** S**** aside read everything when is presented to you in easy to digest form, do not hold, on things you know, you may learn something, no one knows everything.
THE TRUTH IS BORN IN DISCUSSIONS, but constructive discussions.
I am suggesting that you go back and READ, READ AND READ MANY MORE TIMES this thread from page one, and take your time to check all pictures and links. Also read the information, which you have, completely, DO NOT CONFRONT YOURSELF.
So far, you are not being able to prove why synthetic oil should not be better than conventional even if you use MB synthetic oil recommended by them with lower viscosity than Mobil1 or Valvoline.
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Just an example that your differential stil will be protected if you use 75W90 synthetic or conventional, or 75W85 instead of 85W90. I think that you are trying to trash yours if you been putting 85W90 instead of 75W85. READ, READ AND READ EVERYTHIN, do not hold on yours.
Now yor are saying "unless otherwise stated for you model".AND NO IS NOT SYNTHETIC.
So you are saying that Star Service Manual which covers all USA W211 models from 2003-2008 it is wrong about 75W85 oil in our differentials, that is been fill up in the factory. In addition, the oil manual you are using, mentioning same oil for your ML and GL with or without differential lock, or for G-WAGEN with differential locks is wrong.It depends on the model, some require a thicker fluid ie 75w140 so yes "Unless otherwise stated" because the higher performance models need a thicker fluid.
The issue again is the 85w vs the 75w and that the 75w has 1/3 to 1/2 the viscosity at 40C when comparing to the 85w under the MB235.7 fluids.
The fact is the Manual says that you are wrong, so if you choose to use the incorrect fluid thats your choice.
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This oil is much thinner than Mobil75W90 and is not damaging the rear end, it makes me wonder how the Mobil will not being able to provide protection.
Drivbywire, please take your time and check the pictures I am attaching and explain to me how FUCHS Titan Synthetic Gear Oil 75W85 is better than Mobil1 Synthetic Gear Oil 75W90.
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w211 uses 14mm.
SAE 90 can be any oil - 75W90 or 85W90 or only 90. With your location will be better if you go with 75W90, to cover low temperatures.
Here is a link to all MB fluid sheets. MB Hypoid Gear Oil (85W90), MB Part No A001 989 17 03 cannot be found on any of them. The fluid manual posted be drivbywire, dating back to 06/05/2008 says that this oil meets sheet 235.7 specifications, but it is not on that sheet either.
MB 235.7 - Universal hypoid gear oils (Specification 235.7) - Mercedes-Benz Specifications for Operating Fluids
Some of them take 1.6L. Depend which gear you have 2.62 or 3.07.
Yes, if you use Mobil1 or Valvoline (that what dealer offer me when i ask for diff. fluid) you still will spend 20$. If you get the original Fuchs fluid you will spend between 120 and 140$ for two bottles, because one isn't enough for change.
Mine is fine too. I think that 75W90 will give you better protection and performance when is cold. I already put 20000 miles on it and no problems!
By the way the bottle has Mercedes logo on the cap.
, but is not on any MB approval sheet.
Are we going to sing the old song with new tunes?
I will not argue about anything, I will present the facts and please, before you guys start winning read everything in those pictures.
MB prefills all E class cars w/following gear sizes (look at the picture) with synthetic fill-for life, universal hypoid gear oil, SAE 75W-85 since 04.11.2001 and this oil is made by Fuchs Europe, MB part # A 001 989 33 03. This oil is on MB 235.7 Rear axle gear oils (Specification 235.7) plus Fuchs TITAN SINTOPOID FE 75W-85 and Mobilube FE 75W-85. How comes this can be install in M, R and G class in both axels? They also have high torque engines. Page 13 from Factory Approved Service Products.
http://www.startekinfo.com/StarTek/doclist.jsp
I look through all gear oil Spec sheets three times and I was not able to locate MB Hypoid Gear Oil (85W-90) MB Part No. A 001 989 17 03 10. Maybe MB is phasing it out (Mercedes-Benz Specifications for Operating Fluids (MB BeVo) web info is been updated on 09.14.2011).
Mercedes-Benz Specifications for Operating Fluids: Overview Sheets
But I pay attention to the outdated Factory Approved Service Products August 2007 which I download from STAR TekInfo web page, dated there 06.05.2008. and I notice number three after the “Recommended” oil MB Hypoid Gear Oil (85W-90)ᵌ, and what this small tree means: ᵌMeets sheet 235.7 specification. Page 12.
And my head is spinning now: how come 85W-90 is better than 75W-85, but meets same specs? Is it MB going to flush millions down the drain because they factory fill most of the cars w/75W-85 when they face all the warranty claims for differential repair? Alternatively, 75W-85 maybe offers same protection like 85W-90, or vice versa.
Let us look at the Fuchs 75W-85 specs vs. Mobil1 75W90. Which one has higher shear strength at 40⁰C? And Mobil1 [email protected]⁰C is 106, not 99. There is also Fuchs 75W-90 which gets into big rig (Scania, Iveco, Mack, MAN) differentials and it has higher shear strength than 75W-85. But those don’t make that much torque, only around 1500 lbf-ft at 1200 rpm, and they don’t haul much weight, only between 35 000 to 120 000 pounds all day long.
I would like to get one of those 40⁰C differential, because apparently mine is running little bit hot, if I remember almost burn my hand on it when I change the fluid and if it’s available running w/o cooling system engine too.
Tolerances into the differentials are very small; otherwise gears will get damaged easily, so all the friction when power is transferred to the wheels (change in torque direction) create lots of heat.
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