2014CL600

Does it matter If I used 0 w-30 instead of 0 w-40 in my 2006 CL 600?

alx

of course it matters- 30 weight is not allowed on your engine.

there are few things that you should not be creative about- car oil and parachutes come to mind.

awiner

The major difference in oil wieghts even among the same brand is what additives/modifiers, etc. have been added.

Mobil 1 0w40 was formulated to withstand the abuse these engines over 10,000 miles create. They contain additives that are simply not in other weights. If you do a search you will find this issue discussed at length on the forum.

With that said, you would be surprised at what some Mercedes dealers bulk stock in their drums and use in cars.

Will 30 weight cause issues? More than likely not, but it will break down faster than the 0w40 due to the modifiers added.

SLCL

Interesting post. If one changes oil at 5K miles, could they use the 0W-30 instead? How about 10W-40? It's hard to find 0W-40 in my area. Some places have them but they stock only like 3 qts so it would take me several places to get enough for one oil change.

awiner

Changing oil at earlier mileages does circumvent breakdown and sheering. It gets technical to exactly how much however.

If you look at the oil specification for your vehicle, there will be several choices between brands and weights. The specification is updated from time to time.

The latest spec sheet is here:

http://bevo.mercedes-benz.com/bevoli...&language_id=1

Simply find your oil spec # from your manual and click on the spec # to see what is recommended. For my 2003 CL55 it is spec # 229.5 (you will notice below for my engine type 113, spec #229.5 shows you can use four different viscosity types depending on your climate.

The list above will show what brands by viscosity are approved by Mercedes.

Engine Type - 113
MB Approval Number - 229.5
Approved Oil Viscosity Range - 0W-30, 0W-40, 5W-30, 5W-40

SLCL

Thanks for the detail and informational reply.

2014CL600

I talked with Mobil/Exxon and they told me that the best oil to use for my area is the Modified 5W-40 Since we have never been below 40 degrees 0 w isn't necessary. My service adviser told me the same thing and I called around to several dealers and they said the same thing 0w -40 is for back East and places that get below freezing. The Modified is to be a better formulation so Mobil told me. Thanks guys.

awiner

Spec 229.5 lists Mobil 1 Formula M 5W-40 as Mercedes approved.

saintz

The 5w40 is likely the diesel version. You are better using the 0w40 unless you know you have the right oil.

You can get 0w40 from Walmart. Order online and they ship it to the nearest store, free.

http://www.walmart.com/ip/Mobil-1-0W-40-1qt/17034373

2014CL600

Thank you for the link. I just went to MBZ and bought the oil for 7.35 a quart and I got the 5W 40M. I was told for where I live it is a better formulation than the 0W-40. We never get colder than 40 degrees at night, so the 5W 40M is a better formulation for my particular area of the country, so Mobil 1 told me. I thank you. Yes, you are right they make a 5W 40 for diesels but the 5W 40M is for cars

saintz

Unfortunately, no, the 5W40M is probably not right.

Is this what you bought?:
http://www.mobiloil.com/USA-English/...a_M_5W-40.aspx

Note how it says it is for diesel motors. Also the 229.51 throws people. 229.51 is for diesel, 229.5 is for gas. Most people assume it's 229.5.1, meaning a subset of 229.5. It's not, it's spec 51 instead of spec 50, meaning totally different.

There is apparently a 5w40 that is made for gas engines, but I have never seen it and it isn't listed on Mobil's website.

alx

Again, why do you want to stray from what our manual says?

5w40 is more expensive and not widely available. The 0w40 Mobil 1 can be had at Walmart at great price and is what your engine calls for.

2014CL600

Yes, it is right and yes I have been told by Exxon Corporation, the department that actually formulates the oil told me that it is the best for my application in my location. Again, thank you but I am using exactly what I was told. I also spoke with many other techs and that is what they use for ALL MBZ engines in my part of the world. It meets the 229.5 list.

saintz

Can you post a picture? I have never actually seen the gas 5w40.

Also where do you live?

2014CL600

Beverly Hills Ca and Palm Springs Ca and here are the pics.

saintz

Wow, that is the right stuff. Interesting you can find it in CA. I've never actually seen it anywhere else, even on the Mobil website.

2014CL600

They say its a better formulation to the 0-40 has more anti friction factors so I'm told. I think its all a bunch of hoopla to be honest. We just don't need any oil for winter weather at all. I was born and raised in this area and NEVER in my life have I seen it colder than the high 30's.

awiner

According to the Mercedes spec, 5w-40 is the right weight for our warm So. California climate. It never gets cold enough to utilize the 0 weight aspect.

SLCL

So i went ahead and bought this much. Hope it's enough

2014CL600

Unless they were having a sale and you have about 10 cars that you change the oil on every year I would say it was a little overboard.

SLCL

They were $4.99 apiece so I got about 70 qts including 2 cases of 5W-30 (the rest was 0W-40). Some didn't have enough so they gave me the 5qts jugs in substitution for the 5 1qt bottle. I think I will use them up in 3-4 years.

I am shopping for another MB so that should help

2014CL600

Now that is a deal you cant refuse!

khutchinson22

If there is 5w-40 mobile 1 in it and I need to top it off, can I use 0w-40? I am having trouble finding 5w-40 locally and my stealer charges almost $20 to top it off.

2014CL600

Your car doesn't use 5W-40 it uses 0W-40. Do not mix them. I tried the Modified 5W-30 and I got black soot from the tail pipe, many years ago, so I went back to the 0W-40. You can find 0W-40 anywhere, even Wally world.