320 CDI OIl?
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320 CDI OIl?
I used to use M1 0W40 ESP (229.51) but when they went to 229.52, seems M1 switched to 0W30 ESP (Then later the X3 version) for 229.51/52.
With the 0W30ESP (non-X3) not carrying the 229.51/52 designation, that seems out.
There seems to still be a 0w40 ESP, but not showing 229.51 any more, and now there is an 0W40 "SuperCar" (Corvette) oil that soem say is teh same as te just previous 0W40 ESP (not the old 0W40 ESP) but it continues to miss the 229.51 marking.
Is looking at diesel oils, it seems a lot of the 228.x1 designation, and from what I understand the 228.x1 meets the same basic wear and DPF compatibility as the 229.x1, except it is designed for longer change cycles in heady duty diesel engines so it absorbs acids better/longer.
Since my GL320 CDI (2008) has over 185K miles on it, and was originally designed for 229.51 0W40 oil, I would like to run the w40 to help keep the older engine with looser tolerances, and the DPF happy as long as possible.
Does anyone have any suggestions?
It is fairly easy to find a 5W40 that meets 228.31, and 5W30 that meets 228.31/51, and even some 15w40 that meets 228.31/51.
Thouits
With the 0W30ESP (non-X3) not carrying the 229.51/52 designation, that seems out.
There seems to still be a 0w40 ESP, but not showing 229.51 any more, and now there is an 0W40 "SuperCar" (Corvette) oil that soem say is teh same as te just previous 0W40 ESP (not the old 0W40 ESP) but it continues to miss the 229.51 marking.
Is looking at diesel oils, it seems a lot of the 228.x1 designation, and from what I understand the 228.x1 meets the same basic wear and DPF compatibility as the 229.x1, except it is designed for longer change cycles in heady duty diesel engines so it absorbs acids better/longer.
Since my GL320 CDI (2008) has over 185K miles on it, and was originally designed for 229.51 0W40 oil, I would like to run the w40 to help keep the older engine with looser tolerances, and the DPF happy as long as possible.
Does anyone have any suggestions?
It is fairly easy to find a 5W40 that meets 228.31, and 5W30 that meets 228.31/51, and even some 15w40 that meets 228.31/51.
Thouits
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https://bevo.mercedes-benz.com/
Technology changes with light speeds in last years, so what is written in your 2008 manual, should go on the shelve with dinosaur bones.
When my bevmo chart allows me using older classifications oils, after reading how many OM642 engines seized when dealers treated them with older generation oils, I am not going below 229.52 category oils.
They also deliver about 7% better economy, what is not measurable, but sounds good to me.
Motul keeps good prices for years, but last year I found Valvoline in 229.52 category on sale, so grab it as well.
Technology changes with light speeds in last years, so what is written in your 2008 manual, should go on the shelve with dinosaur bones.
When my bevmo chart allows me using older classifications oils, after reading how many OM642 engines seized when dealers treated them with older generation oils, I am not going below 229.52 category oils.
They also deliver about 7% better economy, what is not measurable, but sounds good to me.
Motul keeps good prices for years, but last year I found Valvoline in 229.52 category on sale, so grab it as well.
Last edited by kajtek1; Mar 5, 2023 at 02:51 AM.
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Well, I found a reference to Mobil-1 0w40 X3 ESP having 229.51/52 markings so I ordered a couple cases.
if it doesn't have the markings I'll have them swap it for 0w30 X3 ESP.
Still wondering about those 228.51 oils.
Wondering if they would actually be a bit better.
I am sure a lot of Sprinter shops have been putting them in CDI Sprinters.
if it doesn't have the markings I'll have them swap it for 0w30 X3 ESP.
Still wondering about those 228.51 oils.
Wondering if they would actually be a bit better.
I am sure a lot of Sprinter shops have been putting them in CDI Sprinters.
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C320
Well, I found a reference to Mobil-1 0w40 X3 ESP having 229.51/52 markings so I ordered a couple cases.
if it doesn't have the markings I'll have them swap it for 0w30 X3 ESP.
Still wondering about those 228.51 oils.
Wondering if they would actually be a bit better.
I am sure a lot of Sprinter shops have been putting them in CDI Sprinters.
if it doesn't have the markings I'll have them swap it for 0w30 X3 ESP.
Still wondering about those 228.51 oils.
Wondering if they would actually be a bit better.
I am sure a lot of Sprinter shops have been putting them in CDI Sprinters.
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If it doesn't have a CK-4 label on the bottle don't put it in your diesel engine. These numbered MB oils are far more concerned with the longevity of your DPF than your engine. OM642 engine has a far higher oil failure rate than the other common diesel engines on the US market today. The only common factor is the use 229.xx oils.
So far I at 185K miles mostly on Mobile1 0w40 ESP.
The engine runs well, however oil consumption is up a tad (don't measure, but seems to need top-ups a little more often).
Milage might be a little lower, but my driving also ****s a lot so it is hard to tell. Betting the DPF is not as clear as it once was, and the EGR and heads have a lot more gunk in them than 50K or 100K miles ago.
Maybe seems a bit louder, but betting that is because the other cars have been replaced with quieter ones.
Just want to keep the cams and chain in as good shape as possible because seem these are the eventual failure points for this model engine.
I see Mobil has a Mobil-1 for Turbo Diesels, and a Devac-1 ESP, both 5W40 with 228.31, but not 228.51
Delvac-1 ESP 5w30 is 228.31/51 but at 5w40 it is only 228.31
Wondering what spec drops out and if the difference between .31 and .51 is significant to the DPF?
Well, it is getting one change with the (non-CK4) 0w40 X3 ESP, then next year I can worry about this all over again.
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Well, I found a reference to Mobil-1 0w40 X3 ESP having 229.51/52 markings so I ordered a couple cases.
if it doesn't have the markings I'll have them swap it for 0w30 X3 ESP.
Still wondering about those 228.51 oils.
Wondering if they would actually be a bit better.
I am sure a lot of Sprinter shops have been putting them in CDI Sprinters.
if it doesn't have the markings I'll have them swap it for 0w30 X3 ESP.
Still wondering about those 228.51 oils.
Wondering if they would actually be a bit better.
I am sure a lot of Sprinter shops have been putting them in CDI Sprinters.
Even I have some education in oils, I can't do much without lab tests. That is why I am sending samples of oil almost after each change.
Here is last results for my E250 run on Motul 229.52 category oil. Notice that when FSS or Assyst allows the oils to be run for 12 months, I did 27 on it.
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Shops don't care if your engine will seize few thousands miles down the road. Read the topic about OM642 engines, who seized under dealers service and dealers denied any responsibility.
Even I have some education in oils, I can't do much without lab tests. That is why I am sending samples of oil almost after each change.
Here is last results for my E250 run on Motul 229.52 category oil. Notice that when FSS or Assyst allows the oils to be run for 12 months, I did 27 on it.
<pic removed>
Even I have some education in oils, I can't do much without lab tests. That is why I am sending samples of oil almost after each change.
Here is last results for my E250 run on Motul 229.52 category oil. Notice that when FSS or Assyst allows the oils to be run for 12 months, I did 27 on it.
<pic removed>
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Well, now that we have the Internet and social media and that everyone is an expert on everything, the definition of right can take on multiple meanings. For most people the right oil is what the engineers that designed the engine specified that the engine needs and in turn what the tribologists designed and made for it. For others it is what they themselves mistakenly believe because they know better than anyone else, they received divine guidance or heard / read some bleating on the Interwebz. For others yet the right oil may be extra virgin olive oil, 3-in-ONE multipurpose oil, a blend of coconut and lavender oil or even Überlube. Apparently whatever *YOU* believe is the right oil is the right oil for you. 
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If you still keep coming back with the same question after having links to MB fluid side and lab results, you are over your head with the topic.
When understanding engineers advise and lab results might be too difficult for some, there is no good excuse IMHO to revert to religious believes. some members present.
Then several thousands of years experience proves that you can't fight religions, so choose your pick.
When understanding engineers advise and lab results might be too difficult for some, there is no good excuse IMHO to revert to religious believes. some members present.
Then several thousands of years experience proves that you can't fight religions, so choose your pick.
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2014 Cummins, 2014 E250 Bluetec
If you still keep coming back with the same question after having links to MB fluid side and lab results, you are over your head with the topic.
When understanding engineers advise and lab results might be too difficult for some, there is no good excuse IMHO to revert to religious believes. some members present.
Then several thousands of years experience proves that you can't fight religions, so choose your pick.
When understanding engineers advise and lab results might be too difficult for some, there is no good excuse IMHO to revert to religious believes. some members present.
Then several thousands of years experience proves that you can't fight religions, so choose your pick.
To the OP Benz has a reference for the correct oils UP TO DATE that are covered "recommended" https://operatingfluids.mercedes-ben.../engine-oil/en
Anything else is a persons opinion or preference.
My OM651 with DPF has 228.51, 229.31, 229.51, 229.52 on the approved list. Check your engine.
That being said IMHO the light weight oils are strictly for saving fuel economy at the expense of diesel engine longevity, that and companies pay money to say theres are good to go, doesnt necessarily mean they are any different then the others they put out. Kind of like redline or amsoil, great oils but they dont technically meat the specs of any given car manufacturers requirements.
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If you still keep coming back with the same question after having links to MB fluid side and lab results, you are over your head with the topic.
When understanding engineers advise and lab results might be too difficult for some, there is no good excuse IMHO to revert to religious believes. some members present.
Then several thousands of years experience proves that you can't fight religions, so choose your pick.
When understanding engineers advise and lab results might be too difficult for some, there is no good excuse IMHO to revert to religious believes. some members present.
Then several thousands of years experience proves that you can't fight religions, so choose your pick.
Facts:
1) Engine was designed for 229.51 0w40
2) After design, later year engines with different exhaust systems were updated to 229.52 0w30.
3) MB updated their recommendation to 229.52.
4) General market for light Diesel engines started including technology similar to MB and base Diesel oil was updated to CK4.
5) Gas engines start needing Low SAPS (ESP) oils.
6) Mobil 1 which was the OEM choice for oil started serving the gasoline ESP market with oils that no longer are suitable for Diesels.
7) (second hand information) 228.31/51 Oils are similar to 229.31/51 with greater longevity for medium and heavy Diesels with large sumps and long change intervals.
8) current 229.51/52 oils are not CK4 rated, and most CK4 oils if MB rated only show 228.31
9) Current 229.51/52 oils do not show any other Diesel certifications.
10) Auto mfgs rarely concern themselves about engine longevity beyond 150k miles.
11) Auto mfgs have an incentive to recommend oils that maximize MPG and minimize emissions will less regards to engine longevity beyond the norm for first and warranteed owners (about 150k miles)
Did I leave facts and wander into religion at all?
So, given a CDI engine with EGR and DPF, but no DEF system, with 185k miles, planning on 300+k miles, what is the best oil?
.
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No religion from here.
Facts:
1) Engine was designed for 229.51 0w40
2) After design, later year engines with different exhaust systems were updated to 229.52 0w30.
3) MB updated their recommendation to 229.52.
4) General market for light Diesel engines started including technology similar to MB and base Diesel oil was updated to CK4.
5) Gas engines start needing Low SAPS (ESP) oils.
6) Mobil 1 which was the OEM choice for oil started serving the gasoline ESP market with oils that no longer are suitable for Diesels.
7) (second hand information) 228.31/51 Oils are similar to 229.31/51 with greater longevity for medium and heavy Diesels with large sumps and long change intervals.
8) current 229.51/52 oils are not CK4 rated, and most CK4 oils if MB rated only show 228.31
9) Current 229.51/52 oils do not show any other Diesel certifications.
10) Auto mfgs rarely concern themselves about engine longevity beyond 150k miles.
11) Auto mfgs have an incentive to recommend oils that maximize MPG and minimize emissions will less regards to engine longevity beyond the norm for first and warranteed owners (about 150k miles)
Did I leave facts and wander into religion at all?
So, given a CDI engine with EGR and DPF, but no DEF system, with 185k miles, planning on 300+k miles, what is the best oil?
.
Facts:
1) Engine was designed for 229.51 0w40
2) After design, later year engines with different exhaust systems were updated to 229.52 0w30.
3) MB updated their recommendation to 229.52.
4) General market for light Diesel engines started including technology similar to MB and base Diesel oil was updated to CK4.
5) Gas engines start needing Low SAPS (ESP) oils.
6) Mobil 1 which was the OEM choice for oil started serving the gasoline ESP market with oils that no longer are suitable for Diesels.
7) (second hand information) 228.31/51 Oils are similar to 229.31/51 with greater longevity for medium and heavy Diesels with large sumps and long change intervals.
8) current 229.51/52 oils are not CK4 rated, and most CK4 oils if MB rated only show 228.31
9) Current 229.51/52 oils do not show any other Diesel certifications.
10) Auto mfgs rarely concern themselves about engine longevity beyond 150k miles.
11) Auto mfgs have an incentive to recommend oils that maximize MPG and minimize emissions will less regards to engine longevity beyond the norm for first and warranteed owners (about 150k miles)
Did I leave facts and wander into religion at all?
So, given a CDI engine with EGR and DPF, but no DEF system, with 185k miles, planning on 300+k miles, what is the best oil?
.
16) Venus and Jupiter are planets.
17) While most - but not all - of the facts you listed above are correct, they are also completely irrelevant to the issue at hand. More relevant facts are below.
18) The fuel pumps in NC regularly put out diesel fuel that contains up to B20.
19) Biodiesel has a higher lubricity, is denser (it has a longer hydrocarbon chain) and has a higher distillation temperature and boiling point than petroleum diesel.
20) As a result of (19) above, fuels containing higher biodiesel content do not vaporize as easily. More of the fuel ends up adhering to the cylinder wall and runs past the piston rings, diluting the engine oil (which happens especially during DPF regeneration cycles).
21) Given that the biggest enemy to your engine is oil dilution, the best oil is the one that gets least diluted or alternatively the one that has the biggest ability to deal with dilution, which is any oil that meets the MB 229.52 spec and has MB 229.52 approval.
Q.E.D.
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No religion from here.
Facts:
1) Engine was designed for 229.51 0w40
2) After design, later year engines with different exhaust systems were updated to 229.52 0w30.
3) MB updated their recommendation to 229.52.
4) General market for light Diesel engines started including technology similar to MB and base Diesel oil was updated to CK4.
5) Gas engines start needing Low SAPS (ESP) oils.
6) Mobil 1 which was the OEM choice for oil started serving the gasoline ESP market with oils that no longer are suitable for Diesels.
7) (second hand information) 228.31/51 Oils are similar to 229.31/51 with greater longevity for medium and heavy Diesels with large sumps and long change intervals.
8) current 229.51/52 oils are not CK4 rated, and most CK4 oils if MB rated only show 228.31
9) Current 229.51/52 oils do not show any other Diesel certifications.
10) Auto mfgs rarely concern themselves about engine longevity beyond 150k miles.
11) Auto mfgs have an incentive to recommend oils that maximize MPG and minimize emissions will less regards to engine longevity beyond the norm for first and warranteed owners (about 150k miles)
Did I leave facts and wander into religion at all?
So, given a CDI engine with EGR and DPF, but no DEF system, with 185k miles, planning on 300+k miles, what is the best oil?
.
Facts:
1) Engine was designed for 229.51 0w40
2) After design, later year engines with different exhaust systems were updated to 229.52 0w30.
3) MB updated their recommendation to 229.52.
4) General market for light Diesel engines started including technology similar to MB and base Diesel oil was updated to CK4.
5) Gas engines start needing Low SAPS (ESP) oils.
6) Mobil 1 which was the OEM choice for oil started serving the gasoline ESP market with oils that no longer are suitable for Diesels.
7) (second hand information) 228.31/51 Oils are similar to 229.31/51 with greater longevity for medium and heavy Diesels with large sumps and long change intervals.
8) current 229.51/52 oils are not CK4 rated, and most CK4 oils if MB rated only show 228.31
9) Current 229.51/52 oils do not show any other Diesel certifications.
10) Auto mfgs rarely concern themselves about engine longevity beyond 150k miles.
11) Auto mfgs have an incentive to recommend oils that maximize MPG and minimize emissions will less regards to engine longevity beyond the norm for first and warranteed owners (about 150k miles)
Did I leave facts and wander into religion at all?
So, given a CDI engine with EGR and DPF, but no DEF system, with 185k miles, planning on 300+k miles, what is the best oil?
.
At the time when those engines were design to run on 229.51 category oils, the cellphones worked on network that doesn't exist anymore. Got the point?
So again, we can argue religious believes, but if you believe in something, no other person argument is going to change that.
Do lab test on your own and don't waste our time here.
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Here are some more facts for you:
16) Venus and Jupiter are planets.
17) While most - but not all - of the facts you listed above are correct, they are also completely irrelevant to the issue at hand. More relevant facts are below.
18) The fuel pumps in NC regularly put out diesel fuel that contains up to B20.
19) Biodiesel has a higher lubricity, is denser (it has a longer hydrocarbon chain) and has a higher distillation temperature and boiling point than petroleum diesel.
20) As a result of (19) above, fuels containing higher biodiesel content do not vaporize as easily. More of the fuel ends up adhering to the cylinder wall and runs past the piston rings, diluting the engine oil (which happens especially during DPF regeneration cycles).
21) Given that the biggest enemy to your engine is oil dilution, the best oil is the one that gets least diluted or alternatively the one that has the biggest ability to deal with dilution, which is any oil that meets the MB 229.52 spec and has MB 229.52 approval.
Q.E.D.
16) Venus and Jupiter are planets.
17) While most - but not all - of the facts you listed above are correct, they are also completely irrelevant to the issue at hand. More relevant facts are below.
18) The fuel pumps in NC regularly put out diesel fuel that contains up to B20.
19) Biodiesel has a higher lubricity, is denser (it has a longer hydrocarbon chain) and has a higher distillation temperature and boiling point than petroleum diesel.
20) As a result of (19) above, fuels containing higher biodiesel content do not vaporize as easily. More of the fuel ends up adhering to the cylinder wall and runs past the piston rings, diluting the engine oil (which happens especially during DPF regeneration cycles).
21) Given that the biggest enemy to your engine is oil dilution, the best oil is the one that gets least diluted or alternatively the one that has the biggest ability to deal with dilution, which is any oil that meets the MB 229.52 spec and has MB 229.52 approval.
Q.E.D.
Now I am getting somewhere.
I am in NC so our normal mix is 5%, with a cap at 10%. I also hunt for real D2 when I can find it.
I have never had an issue with oil level rising (a sure sign of dilution)
Does 229.52 deal with dilution that much better than 229.52?
I would assume (please correct me if I am wrong) a big problem with dilution is the associated lose of viscosity and lubricity.
Does a 0w40 buy you a little protection compared to 0w30?
If so, does it make up for some of the difference between .51 and .52?
is the CK4 rating a canard in this discussion, or does it have some merit?
Same question for the 228.51 discussion?
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Thread Starter
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However, the point is the most common 299.51 oil in the US (the Original Mobil1 ESP) was 0w40, and that is what MB recommended.
About the same time 229.52 came out Mobil1ESP became 0w30, and the 0w40 became almost impossible to find. (I don't recall if that version of ESP ever showed a 229.52 marking.
If you look on the MB approval page, you will see almost no 229.52 0W40 oils, but many 0w30 and 5w30 oils.
The 229.51 page shows far more 0W40 and 5W40 oils.
So that is not the only thing, bit des appear to be significant.
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From: V E G A S
1922 Ford Model T / no OBD
Link in post #2.
Read the chart carefully.
You might notice that recommendations changed via MY.
OM642 engine was (is ?) in production for over 20 years and changed quite a bit.
From no emission system, to fully blown DPF and SCR system
The oil recommendations changed as well and latest models do require 229.52 oils only.
Read the chart carefully.
You might notice that recommendations changed via MY.
OM642 engine was (is ?) in production for over 20 years and changed quite a bit.
From no emission system, to fully blown DPF and SCR system
The oil recommendations changed as well and latest models do require 229.52 oils only.
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'17 GLS450, '14 GLK250, Grandpa's Roadster
Link in post 2 takes me to a list of all the specs and sheets showing who makes them, but no list of oils for my engine. They allude to the on line owner's manual, but when I choose that all I get is in German und meine Hochschule Deutsch ist 60 Jahre alt.
