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what oil to use ??

Old May 7, 2016 | 12:53 PM
  #1  
freewheel's Avatar
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R350 Bluetec 4matic 2011 and..........hyundai elantra 2016........
Question what oil to use ??

Hi there, i do have a simple question but the answer is going to be hell......


i'm the owner of a R350 bluetec, 2011, i got it used a little while ago, and had a local shop change oil and filter around 8000 km ago ( i am pretty shure they used 5w40 castrol edge, i remember the mechanic showing me one of the one liter bottles with the 229.51 specification on it ).


now, i'm going to do the oil and filter change myself, easy and cheaper. I'm going to use 0w40 because the winters are verry cold out here ( canada, quebec ).


the only 2 oils that meet the MB 229.51 requirements ( source MB website ) are : castrol edge stp 0w40 and mobil 1 esp 0w40.


Question, witch one is the best, witch one should i use? ( could find some castrol in one liter bottles, could not yet find mobile 1 in my area ). Comes down to the tricky question, castrol edge VS mobile 1.........


second question : could find Mobile 1 DELVAC esp 0w40 oil, this one is advertised on mobile website to be heavy duty disel engin oil fit for engines using EGR and catalitic filter and so on.........could i use it? It's not listed on MB's website nor heawing a 229.51 certification BUT, wondering, if it's fit for diesel truck engin that run hours and hours under load, could it be ok in mine??




thank you guys
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Old May 7, 2016 | 01:14 PM
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2012 e350 bluetec
Use whatever meets the MB 229.51 spec and is easiest for you to find. You could also use an approved 0w30 oil for the winter which is also OK for the summer. I wouldn't use a non-approved oil. I prefer a 5w40 but the temps here in CA are very different.

Maybe Glyn has other thoughts.
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Old May 7, 2016 | 01:47 PM
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The MB 229.51 list is quite extensive. You state that it only lists two choices, but you will find quite a good selection here:

https://bevo.mercedes-benz.com/bevol...229.51_en.html
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Old May 7, 2016 | 02:19 PM
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2012 e350 bluetec
The OP stated he wanted to use a ow40 oil because of the cold winters. The BEVO list contains very few ow40 oils. The Mobile 1 and Castrol ox40 oils may be the only two readily available in his Canadian market area. I suggested a ow30 oil because it opens up a few more choices.
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Old May 7, 2016 | 06:50 PM
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2007 W204 220CDI Classic Sedan
I use Shell Ultra Extra 5w-30. Maybe a good compromise for your conditions.

Looking at the Bevo list, the 5w-30 grade is the most prevalent by far.

Last edited by Carsy; May 7, 2016 at 07:27 PM.
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Old May 9, 2016 | 11:32 AM
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R350 Bluetec 4matic 2011 and..........hyundai elantra 2016........
thanks for.your answers....

Thanks for your answers.......i will definitly stick to w40 over w30......because its the recommandation for m'y car......and go to 0w instead of 5w just because im not driving huge km and one oil change is going to get me to next winter for shure. Does anyone have some input on the DELVAC oil ??
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Old May 9, 2016 | 04:48 PM
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Originally Posted by freewheel
Thanks for your answers.......i will definitly stick to w40 over w30......because its the recommandation for m'y car......and go to 0w instead of 5w just because im not driving huge km and one oil change is going to get me to next winter for shure. Does anyone have some input on the DELVAC oil ??
I am having difficulty understanding with your logic.

You are going to stick with w40 because you say it is recommended for your car but wish to look into using Delvac which is not recommended & not even listed as 229.51.

I would have thought a truck engine lubrication requirements would be a lot different to a small MB diesel.

I am looking forward as you are , to a triboligist to tell us why.
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Old May 9, 2016 | 05:56 PM
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Here is the latest 229.52 listing. 229.51 also fine.

http://bevo.mercedes-benz.com/bevoli...nt_action=show
Many Heavy Duty HDEO's do not meet many of the Benz passenger car diesel requirements such as HTHS of the base fluid & will bugger up the emissions gear such as Cats & regen units.
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Old Jun 11, 2016 | 07:24 PM
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When 229.51 was allowable few years ago, lately MB allows only 229.52 oils.
The list of oils shrinks pretty drastically.
Familiarize yourself with linked site.
Here is English version listing cars https://bevo.mercedes-benz.com/d/d/en/Spec_223_2.pdf
and once you find specifications for your engine you can surf from here https://bevo.mercedes-benz.com/bevol...ets-sort1.html
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Old Jun 11, 2016 | 09:35 PM
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Check the dealer's price on MB branded 229.52. You might find it quite competitive.
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Old Jun 11, 2016 | 10:40 PM
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Also befriend part department employee.
I always present myself as business owner and they sell me parts at deep discounts.
In USA one of the lowest priced warehouses is autohousaz.com.
When it come to MB coolant, the local dealer sold it to me like 5% cheaper.
I figured out that since autohous offers free shipping and coolant is kind of heavy for its value, they included shipping in the price.
Then where I live we still have oldfashion automotive part chain. One of those, where you ask for "M8x25x1.5 bolt" and they will know what you are talking about without asking for VIN.
Somehow the chain manage to get fluids at good discounts. I was buying Red Line products from them cheaper than manufacturer counter (20 miles away)
They have MB coolants and whole line M1 oils.
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Old Jun 20, 2016 | 10:14 PM
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It's also important to note that MB gives different oil change intervals based on the quality of the oil. You will even find a setting in you fss for this on some models.

So, an oil may meet the 229.52 spec, but it may need to be changed more frequently. If I recall correctly, long-life oils are recommended for 17,000kms and standard oils 12,000kms. This is not always explicit in the literature.

There's a lot of discussion about whether different brands/qualities/etc really make that much of a difference, but I think the increasing frequency of seized engines and sludging problems suggests that it does.
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Old Jun 20, 2016 | 10:59 PM
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I don't think there is much quality difference between the brands, but the jelled oil from seized Bluetec posted on this forum is something extreme.
IMHO it was either some kind of chemistry that made the jelly, or the dealer did not change the oil for long time, while stamping the book.
Chemistry does do tricks occasionally. I deal with Ford 6l Powerstroke where replaced oil cooler clogged after 10,000 miles. I put the best oil (T6) and Mercedes coolant in the truck, yet something weird went on. I cut the cooler for inspection and did not see any dirt. Plan to split the layers and check more.
Bottom line, in modern engines with everything exposed to very high stress and several different materials some unpredictable can easy happen
Lets hope the pending oil analysis will shed some light.
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