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  #1  
Old 06-24-2011, 01:03 PM
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mobil 1 in a 300TD

Can I use 20w50 Mobil 1 in this diesel?

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  #2  
Old 06-29-2011, 01:28 PM
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I have used that oil, and now use Mobil Delvac 1, in all my MB Diesels. There is a school of thought that suggests you should be on the lookout for new oil leaks when you change to a synthetic. I have only had one 240D that had a bad rear seal leak, and the type of oil had nothing to do with that problem. It was the 300,000 plus miles....

Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #3  
Old 06-29-2011, 01:31 PM
oldsinner111's Avatar
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Quote:
Originally Posted by Carmen View Post
Can I use 20w50 Mobil 1 in this diesel?
Only diesel rated oils.
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  #4  
Old 06-29-2011, 01:37 PM
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Mobil 1 20W-50 is Diesel rated. Delvac 1 is also Diesel rated.

Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #5  
Old 06-29-2011, 04:18 PM
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20-50 is too heavy anyhow, esp in NC.

BTW, I had a 95 with some sealing issues, and of all the dino oils I tried, DELVAC kept its "composure" longest before thinning out and becoming fuel for the engine.

This is PERFORMANCE. Typically, you'd want the lightest viscosity for the highest HP.
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  #6  
Old 06-29-2011, 07:33 PM
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I recommend either 15w40 diesel rated M1 or 5w40 M1/delvac td&t oil.
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  #7  
Old 06-29-2011, 09:17 PM
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If you want to go to synthetic for a diesel it is called Mobile 1 Truck and TurboDiesel and comes in the gallon jug. Every now and then O'Reillies has it on sale for ~$20.

I'd follow Jim's advice if I were not going to go with synthetic.
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  #8  
Old 06-29-2011, 10:58 PM
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Quote:
Originally Posted by Carmen View Post
Can I use 20w50 Mobil 1 in this diesel?
123 or 124?
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  #9  
Old 06-29-2011, 11:49 PM
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An Oil Thread!

All Mobil 1 products are synthetics, and the formerly red capped 20W-50 was one of the better blends. It is routinely listed as being qualified to the MB oil specification 229.5. Delvac 1 is the first Mobil 1 product developed specifically for Diesel engines and has been at times listed as qualified to MB spec 229.51. It has been made available for other than trucks (used to only be available in gallon jugs), and is marketed now as "Turbo Diesel and Truck" oil, with the same 5W-40 viscosity.

Here is an excerpt from the 02/2010 MB service bulletin:

Mercedes-Benz Approved Engine Oils

2 Feb, 2010

By far the best place to find Mercedes-Benz maintenance and service information is in the operator’s manual that came with your car. If you don’t have the manual, note that Mercedes-Benz USA recommends using factory-approved service products explicitly approved for your vehicle model. Below you’ll find recommendations published by the manufacturer for engine oils that we gathered for you.

Be aware that all engine oils vary in quality. The most common ratings are provided by:

ACEA (Association des Constructeurs Européens d’Automobiles)
ILSAC – International Lubrication Standardization and Approval Committee, and
API (American Petroleum Institute).

For Vehicles Without Flexible Service System (FSS or FSS PLUS) – U.S. vehicles Model Year 1997 and earlier:

Side Note: The “Flexible Service System (FSS) – Mercedes-Benz (1998 and newer) use a Flexible schedule for maintenance called Flexible Service System (FSS). The system is designed to offer a flexible service schedule which is directly based on driving habits. Contact your local Mercedes-Benz dealer if you need further explanation.

Again, Mercedes-Benz recommends the use of approved engine oils only. They are listed in the Mercedes-Benz oil specification “sheet 229.3 or 229.5″ which also meet ACEA and/or API classifications listed on the chart below. If a specific Mercedes-Benz-approved or recommended ACEA engine oil is not available, then an API engine oil meeting the recommended API classification can be used.

Only engine oils (including synthetic) with any of the following classification grades, or combinations thereof, are approved according to published documents available from Mercedes-Benz for

“U.S. Vehicles Model Year 1997 and Earlier Engine Oils.”

Engine Oil Quality Designations

Mercedes-Benz recommends only the use of Mercedes-Benz approved synthetic motor oil for all vehicles equipped with the Flexible Service System (1998 & newer). Below is a List of Mercedes Approved Synthetic Engine Oil (1998 – 2004 Models):

Mobil 1 SuperSyn European Car Formula 0W-40 | MB Sheet: 229.5
Castrol Syntec European Formula 0W-30* | MB Sheet: 229.5
Pennzoil European Formula Ultra 5W-30* | MB Sheet: 229.5
Quaker State European Formula Ultra 5W-30* | MB Sheet: 229.5
ELF Excellium 229.5 5W-30* | MB Sheet: 229.5
Mobil 1 ESP Formula M 5W-40 | MB Sheet: 229.5
Mobil 1 SuperSyn European Car Formula 0W-40 | MB Sheet: 229.3
Castrol Syntec 5W-40 | MB Sheet: 229.3
ELF Excellium LDX 5W-40 | MB Sheet: 229.3
ELF Excellium LDX 0W-30* | MB Sheet: 229.3
Quaker State Full Synthetic European Formula 5W-40 | MB Sheet: 229.3
Pennzoil Synthetic European Formula 5W-40 | MB Sheet: 229.3
76 Pure Synthetic Motor Oil 5W-40 | MB Sheet: 229.3
Kendall GT-1 Full Synthetic Motor Oil 5W-40 | MB Sheet: 229.3
Motul 8100 E-Tech 0W-40 | MB Sheet: 229.3
Motul 8100 X-Cess 5W-40 | MB Sheet: 229.3
Shell Helix Ultra 5W-30* | MB Sheet: 229.3
Shell Helix Ultra 5W-40 | MB Sheet: 229.3
Valvoline SynPower MXL 0W-30*| MB Sheet: 229.3

List of Mercedes-Benz Approved Synthetic Engine Oil (2005-2009 Models):

Mobil 1 SuperSyn European Car Formula 0W-40
Castrol Syntec European Formula 0W-30*
Pennzoil European Formula Ultra 5W-30*
Quaker State European Formula Ultra 5W-30*
ELF Excellium 229.5 5W-30* Mobil 1 ESP Formula M 5W-401
Valvoline SynPower MST 5W-30*

* Not approved for use in AMG engines.

NOTE: As of model year 2007 diesel engines must only use 229.51 approved engine oil.

Conventional petroleum based oils are not recommended for vehicles equipped with the Flexible Service System (1998 & newer) but maybe used for older vehicles (1997 & Earlier).

What viscosity?
Always refer to a viscosity chart for the proper viscosity grade based on ambient temperature for your area.

Side Note: Viscosity is defined as the resistance of a fluid to flow. A highly viscous substance does not readily flow. For example, thick syrup has high viscosity while water is a fluid with low viscosity. Put simply in everyday terms (and for fluids only), viscosity can be thought of as “thickness.”

Also note that the viscosity chart below – published by MB in “Factory Approved Service Products August 2007″ - supersedes ALL previously published viscosity charts; again, according to published documents available from Mercedes-Benz. Contact a Mercedes-Benz dealer or independent shop if you have questions.

Select the appropriate oil viscosity based on the lowest air temperature expected before your next oil change.

Engine Oil Viscosity Chart from Mercedes-Benz

The table below was published by Mercedes-Benz in November 2008. It provides the Mercedes-Benz approval number; check your Operator’s Manual for the engine type of your model.

Engine Type

MB Approval Number

Approved Oil Viscosity Range
113 229.5 0W-30, 0W-40, 5W-30, 5W-40
155 SLR 229.3 5W-50
156 229.5* or 229.51 0W-40, 5W-40
272 229.5 0W-30, 0W-40, 5W-30, 5W-40
273 229.5 0W-30, 0W-40, 5W-30, 5W-40
275 229.5 0W-30, 0W-40, 5W-30, 5W-40
642 229.51 0W-30, 0W-40, 5W-30, 5W-40

*156 engine using 229.5 should use only SAE 0W-40 oil

Factory-approved service products are available at your authorized Mercedes-Benz dealer as well as independent shops and auto supply retail outlets.

Side Note: According to MBUSA,
“Every Mercedes-Benz in the U.S. – no matter how old, how many miles its odometer reads, or how many owners it’s had – qualifies for Roadside Assistance, 24 hours a day, 365 days a year. If you ever need assistance while traveling in your Mercedes-Benz, just call 1-800-FOR-MERCEDES (1-800-367-6372) for our 24-Hour Roadside Assistance.

Our Roadside Assistance technicians know Mercedes-Benz vehicles, and they’re well prepared to handle unforeseen roadside complications. They´ll jump start your battery, bring you a few gallons of fuel to get you to the next filling station or change a flat tire using your spare, all free of charge. So you can be confident that help is there when you need it most.”

You can obtain a copy of the Roadside Assistance Program “brochure” from the MBUSA website here – look under the Roadside Assistance tab and look for the brochure link. It is a good idea to have a copy in your car.



Here is a link to a site where the latest list of oils qualified to MB 229.3/229.31 and 229.5/229.51 that is maintained by MB:

http://bevo.mercedes-benz.com/bevolisten/229.51_en.html

There is a window in the upper left side of the sheet that says "select sheet" that you click on and then scroll to the MB spec sheet you are interested in - the sheet opens and you do your search.

Delvac (without the "1" designation) is a "dino" oil designed for Diesel rigs and has been around for quite a while. Very good non-synthetic oil and highly recommended if you are not going to splurge on synthetics.

There are several routinely available brands carried at Wally World and other places, so finding a great oil for an older MB should be no problem.

Hope this helps,

Jim
__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #10  
Old 06-30-2011, 11:56 AM
oldsinner111's Avatar
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I run w15-40 summer and 5w40 sync winter,in both my Benz's.Diesel Oil
When I run sync oil,I still change filter every 3,000 miles the SD I will go 6000 miles on oil,the S 9000 miles.
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Last edited by oldsinner111; 06-30-2011 at 02:54 PM.
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  #11  
Old 07-01-2011, 03:02 PM
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I wouldn't run thinner synthetic than what is recommended what is in the owners manual. Some of the 80's and older cars didn't have sliding surfaces as polished as smooth as newer models and running thinner oil will lead to wear.
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  #12  
Old 07-02-2011, 08:51 PM
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Answer

Quote:
Originally Posted by Carmen View Post
Can I use 20w50 Mobil 1 in this diesel?
I have used Mobile1 in diesel engines with no issues, since 1977..



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  #13  
Old 08-09-2011, 01:48 AM
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Quote:
Originally Posted by oldsinner111 View Post
I run w15-40 summer and 5w40 sync winter,in both my Benz's.Diesel Oil
When I run sync oil,I still change filter every 3,000 miles the SD I will go 6000 miles on oil,the S 9000 miles.
Thats extremely wasteful to the environment and harmful to the engine.
Engine oil has detergents that break down sludge but eventually degrade away. Frequently changing the oil exposes the engine to those detergents for longer, increasing wear.
Also, there is zero benefit to using dino oil in any situation. 5W40 synthetic should be used year-round.
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  #14  
Old 08-09-2011, 01:55 AM
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Originally Posted by ForcedInduction View Post
Thats extremely wasteful to the environment and harmful to the engine.
Engine oil has detergents that break down sludge but eventually degrade away. Frequently changing the oil exposes the engine to those detergents for longer, increasing wear.
Also, there is zero benefit to using dino oil in any situation. 5W40 synthetic should be used year-round.
Using 5W-40 synthetic.

How many miles between change?

Typical driving.

Thanks.
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  #15  
Old 08-09-2011, 01:58 AM
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I go 1 year or 10k miles (whichever first) in both my cars.

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