Mobil 1 0w40 for $37.46 after $12/case rebate :

Mobil 1 0W40

This is cheaper then Walmart before sales tax!

__________________
-- Chris

'95 E300, 216k miles, Silver Surfer
'05 E320 CDI, 138k miles
'07 S550 4matic, 69k miles

Gone but not forgotten:

'76 300D, 350k miles?, SOLD in 1995
'75 240D, 300k miles, SOLD in 1991

Oil thread!

It might be an acceptable grade but it's not labeled as Diesel rated. Look for CG, CH, CI, etc. in addition or in place of the S ratings.

http://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_0W-40.aspx

Sixto
87 300D

And it's only 6 quarts; most of our diesels take 7 or 8 so (if it was diesel-rated, which it is apparently not) you'd have to buy two cases or a couple of extra quarts.

Jeremy

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Just because they dont pay API for a C license anymore doesnt mean much. Most of these euro specs are relevant for diesel, including the ACEA B specs.

Mobil 1™ 0W-40

That said, I agree with you in spirit, and for any diesel that doesnt have some special need or a DPF, Id always run a standard HDEO. No reason to not use one.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

I wish I understood those acronyms. I'm just quoting from the book in the glove box

The spec sheet says it's CF rated which should be good enough for MB IDIs. Why not put it on the label if it's on the spec sheet. Can they afford to alienate the ignorant public?

Sixto
87 300D

Shell Rotella 5w40 synthetic is $20/gallon at Orly's or whatever its called these days. I think its slightly cheaper than wally world at this point.

__________________
CENSORED due to not family friendly words

Can you verify that the oil giant Mobil chooses to NOT pay a fee for the proper industry standard rating? That smells fishy. Can you also verify that the MB ratings also include the diesels of old or diesels period? Diesel oil has to have soot dispersants which gasoline oil does not. I don't know of any diesel engine manufacturer which recommends an oil that is not diesel rated- but in the last ten years oil approval is a hot topic and I could be mistaken.

From the Mobil web site:

"Mobil 1 0W-40 (European Car Formula in North America) synthetic oil is engineered for the latest gasoline and diesel (without Diesel Particulate Filters or DPFs) engine technology delivering excellent all-round performance."

I thought this was MB factory fill oil until the advanced particulate filters were introduced.

__________________
-- Chris

'95 E300, 216k miles, Silver Surfer
'05 E320 CDI, 138k miles
'07 S550 4matic, 69k miles

Gone but not forgotten:

'76 300D, 350k miles?, SOLD in 1995
'75 240D, 300k miles, SOLD in 1991

Means little without the outside standard approval. This is the same argument going on over at BW- but the multi-industry independent standards are not being followed- so the questions I asked earlier are not answered with this statement from Mobil.

Well to start, because the API states that a CF rating is obsolete, which is something that you can see from their literature if you dont believe me:

http://www.api.org/certifications/engineoil/categories/upload/motor_oil_guide_2010_120210.pdf

And from them specifically:

Now, pull down the API licensing agreement, part C. In there, section 6, youll find:

So explain to me exactly why Mobil would pay a licensing fee for an API spec that is obsolete and has no relevance to anything in use in any application?

If you have an application that is diesel and want to use that oil, it holds other diesel-specific specifications. ACEA B3, B4, which the oil officially holds are passenger car diesel specs. The oil holds a Dexos 2 rating (not stated on the PDS), which is an oil spec for GM diesel engines. All of the MB 229.x specs utilize a diesel engine for diesel-specific tests (OM 646 DE22 LA (CEC SG-L-099)), as well as map also to some VW TDI tests and the VW 502 spec itself. VW uses the 505 spec for diesels, and it too is listed on the M1 oil.

Now, M1 0w-40 does claim to meet CF, but note the crafty wording:
It claims to meet the old GM-LL-B diesel spec this way too.

So in other words, M1 0w-40 holds diesel specs and is a lube design for diesel engines for which it fits, namely newer diesels that utilize their manufacturers or the ACEA diesel specifications and do not have so much emissions equipment that they need a low SAPS oil to protect it.

But how much of the discussion on here is for the high pressure direct injection common rail modern passenger car diesels that these specs are all written to? Maybe a few on here run CDI engines and this will work, but most on here as far as I can see run old IDI engines that load a lot more soot.

I love M1 0w-40 oil, and I also love synthetic oils in general. Its all I run in my vehicles. But would I use that oil in any w115/116/123/124/126/210? Nope.

Why? Because the current diesel specifications for HD diesel engines align to the modern API Commercial C specifications, and these oils hold lube designs really optimized for diesel engines and their needs and requirements, including the more severe soot loading, TBN loss, etc. So they will do a better job in those areas.

Will M1 passenger car oil work? Ill bet it will just fine.

But when I can utilize a lube with an add pack better optimized for my application, why wouldnt I?

But back to the original question - Mobil IS paying for certs that are of relevance to its intended operation in gas AND diesel engines. M1 0w-40 does hold some modern diesel specs. It is not holding active certification for an obsolete commercial diesel spec, because no diesel operator on the commercial side is going to be running that oil in their engine when there are far better options available for their diesels. Mobil pays for the specs required to maintain warranty coverage of engines and vehicles that they have a customer base with that need. Paying to show an obsolete spec that nobody is going to buy on is just a waste of money.

Also for your other question, all MB 229 specs have to be tested on the engine I cited above and pass for varying characteristics for the following tests:

Cam wear inlet (avg. max. wear 8 cams)
Cam wear outlet (avg. max. wear 8 cams)
Cylinder wear (avg. 4 cylinder)
Bore polishing (13 mm) - max. value of 4 cyl. Piston cleanliness (avg. 4 pistons)
Engine sludge avg.
Ring sticking
Tappet wear inlet (avg. max. wear 8 cams)
Tappet wear outlet (avg. max. wear 8 cams)
Bearing wear main / con rod bearing
Piston ring wear axial @ ring 1 (4)
Piston ring wear axial @ ring 2 (4)
Piston ring wear axial @ ring 3 (4)
Piston ring wear radial @ ring 1 (4)
Piston ring wear radial @ ring 2 (4)
Piston ring wear radial @ ring 3 (4)
Timing chain wear (elongation)
Oil consumption
Soot
Viscosity increase at 100°C

FWIW, since the HDEOs that I advocate all carry MB 228.x specs, those oils too must meet the basic MB requirements as well as diesel specific wear and other tests on the OM646 engine I mentioned above, and then those oils also have to be tested on an OM 501 LA Euro 5 (CEC-SG-L-101) as well.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

That's where a little information is dangerous. If my vintage owner handbook says to use a certain spec, that's what I look for when selecting.

It's the same dilemma with our 20 year old van. The manual says to use Mercon ATF, not Dexron. I look on the shelf and all I see is Dex/Merc which is compatible with both Dexron III and Mercon, and Mercon V which says it's compatible with Mercon but some strongly advise against mixing with Mercon.

So many answers on the internet but nothing definitive or comprehensible by me from the only sources that matter - the folks who are liable if my engine or tranny fails.

[/rant]

Sixto
87 300D

Well, thats where a little research is required. The API definitions for CH-4, CI-4 and CJ-4 all specifically state that they are current specifications and all can be used in place of CF-4 oils.

But where are the specs that indicate that for an MB, that API CF is the desired spec?

Newer:


Older:


AFAIK, the MB spec sheet number was always the reference for their oils, not an API valuation. Maybe you have a manual that calls it out?

The newer viscosity chart shown above does indicate CCMC G5, which was a precursor to the ACEA ratings. Note that this spec required a higher hi-temp/hi-shear viscosity to it (like the ACEA A3/B3), which allowed the same viscosities to be used across wider temperature ranges.

ATF is a real mess right now. Dex III is no longer a valid spec, so there is no licensed ATF for millions of ATs that require it and dont want the lower viscosity Dex VI. Mercon is similar and I dont have a good answer for that one...

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

"0" is pretty light for a compression engine. Cheap or not.

Mobil- the giant corp cannot afford $2500? I do not take that seriously.

According to the PDF you provided all diesel oils start with a "C" and all non diesels do not. I don't see any cross reference which lists Mobil's gasoline oils that also have a "C" rating for soot loading. Am I missing something?

More later but thanks for the post.

That makes zero sense.

M1 0w-40 is a fairly light 40wt oil. But it is 13.5cSt at 100C, which is within the range of a 40 wt engine oil. It is 75 cSt at 40C.

For reference, Shell Rotella T6 is 14.2 cSt at 100C, also within the 40wt range of viscosity, and 87 cSt at 40C.

Nobody wants a 75 or an 87 cSt oil in their engine. Notice the viscosity at operating temperature.

So is 75 cSt too light or you, given that at operating temperature it is 13.5cSt? What do you want in your engine at cold start, asphalt?

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)