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2001 E430 4Matic
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234 Posts
Discussion Starter #1
Hi! Does 229.5 oil specs.. have 5W30 ..that means that even in V8 we can use 5W30 without harm ???? So can somebody explain why also Xw40 grades in the list ?
Why Mercedes has 30 and 40 grades for same engine? Can I use 5w30 for whole year in M113 ???
 

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W210 Moderator
99 E320
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4,974 Posts
I just stick with what is recommended for my engine as shown on the w210 publications, i.e. 229.3 and in the weight grade which is suitable for my lowest expected temperature during that oil change cycle. Beyond that, I don't fret with 'what if...or why...' of oil specs for different years or engines. Since the compression readings are still great 20 years later and the car is running great, I don't fret about chasing numbers and leave it at that.
 

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MY05 CLK55 AMG , MY05 CLK320,Former,C180 Kompressor,Jensen Healey,Ford Capri V6,Alfa GTV.
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1,553 Posts
I have used Castrol Edge 5w-30 229.5 spec in my M112 which has only done 30,000 miles,, for years ...ambient temps , here go over 100 f in summer. This oil is lower viscosity so will give better fuel consumption. M113 is the same as M112 when it comes to oil.
When the car gets to 60,000 miles I will probably switch to a 5w-40 229.5.
 

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1998 W210 E320 base saloon USA version
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99 Posts
A synthetic 5W will pump and flow sufficiently virtually anywhere actually inhabited with very few exceptions. The vast majority of owners need not worry about low temp limits.

However it’s been above 30C for many weeks and I measured 40C two dates ago so it’s the other temperature extreme I’m more concerned with. A 30 will do nonetheless. I’d shop by cost between 229.3/5 synthetics.
 

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E320/E250 Bluetec Ford F350 6.7l
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35,910 Posts
Bare in mind that your engine was design to run on dino oils, long before 229.xx classifications were invented.
I think your manual will call for SD class oil, while on new bottles you will find the modern oils went way up from D classification and the letters after S show actuall quality classifications, while 229 approvals are politics-oriented..
Oil weight choice is compromise, just like with tires.
Lower viscosity gives you better mpg and faster oil flow on cold start, but then oil film will shear faster under extreme load.
I drive in 120F temperatures on daily bases and have no problem to run 30 weight in my hard working diesels.
But then I will never get them even close to their 1-million miles potential.
 

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2001 E430 4Matic
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234 Posts
Discussion Starter #6
I running now 10w40 Castrol Gtx High Mileage ... this month will go probably to Castrol 0W40 cause of winter ! We can get here in NY state like -20 C°
 

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Registered
2001 E430 4Matic
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234 Posts
Discussion Starter #7
I am just worried if 0W40 will start seeping around gaskets and seals
I alredy have small seeping filter housing ..and at rear of a engine where tranny connects to the engine .. :unsure:
That's why I am using thick oil Castrol Gtx HM
 

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Registered
1999 E430; 2005 ML500
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1,500 Posts
Yes, you can use most any good quality synthetic in a normal viscosity range without fear.

On a related note, who remembers when oil came in cans, and you were cool if you had your own spout that you poked into the can top?
 
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