What is the best engine oil for C63? I would like to use good one that is good for racing car. In Japan dealer uses Mobil 1. What number do you guys use? Like 0W-40, etc

 

that is a great question I have driven the C63 around in the city and notice the engine oil raise quite fast.

for the M3 we use 10-60 but I think the C63 is x-40 I don't remember the first number.

any suggestions?

 

Mobil 1 0W40

 

Just make sure it meets MB spec 229.5

 

So the dealer thru out the world uses Mobil 1?

 

I thought that they recently switched to 5W-40 Mobil 1? It really depends upon the temperature range. There was a long, more detailed, thread about his too. The 5W is for cold weather (freezing) flow at startup, while the 40 is when the oil is at the high end (212 F where water boils). Synthetic just extends those ranges.

 

Just do some research instead of parroting the ads in the owners manual.
Ams/oil. For our cars the 5W40 European Formula. I have used it in severe conditions, compared it (with analysis) and sold it for 30 years including in the German brands.
I would let it wear in on Mobil 1 and then switch over.
And yes it meets spec 229.51

 

Been topping up with Motul 8100 X-Clean 5W40.

 

229.51 is incorrect

229.5 is the correct spec for the C63

 

i use motul 8100 x-clean 5w-40....but it said 229.51, in toronto i think it is very hard to get euro formula mobil 1
http://www.motul-canada.com/en/produ....shtml?panel=0

 

Full list of blatt 229.5 spec engine oils. It's highly recommended to stay within 229.5 guidelines. Keep in mind, the approvals are not only for a certain type of oil, but that specific oil at a specific weight.

Also, there may have been a bulletin regarding AMG engines and the M156 specifically, but I'm not 100% sure.

 

229.51 is fine also. I had 2 dealers check it out and I talked to Amsoil as well.
I have run it and the analysis report is excellent. Would you like to see the results?
I have used, compared and liked Mobil 1 for years but the idea of them "buying" a recomendation does not agree with me.
You are correct that these days you must be more careful regarding engine oil selection with certain vehicles.
If you are more secure with the spec in the manual, use it.

 

The last two trips to the dealer, they put in the ESP formula M 5w40, even though it's MB 229.51. Car runs great, been burning less oil. Should have my latest analysis back next week.

 

Not trying to start a flame war - Amsoil is a very good oil, but it is not approved by MB. Lots of oils in addition to Mobil 1 are, but not Amsoil. There is a difference between Amsoil telling you they meet or are equivalent to 229.51 and MB approving it for use under 229.51.

Here is the list of MB approved oils meeting 229.5:

http://bevo.mercedes-benz.com/bevoli...nt_action=show

Here is the list of MB approved oils meeting 229.51:

http://bevo.mercedes-benz.com/bevoli...nt_action=show

 

My dealer uses the ESP in all M-B's also, not just diesel. I'm still a few months away from a 6k miles UOA but will report back on the results, please let us know how yours turns out.

 

No problem.
If memory srves me correctly I recall at some point in the late 70's and early 80's Mercedes approved Mobil 1 in Europe but did not approve Mobil 1 for cars in North America. Figure that out. Some owners were in a flap about the synthetics not being on the list but it was absolutely clear that certain new synthetics were far superior. We used them and never had a problem. In fact we got all the benefits.
Amsoil has said the reason they are not on the list is that they wont pay Mercedes a large sum of money (for testing) to be on the list, particularly when their oil has proven itself and the size of the Mercedes "market" is not large enough for them to justify it.

 

For those interested, here is the engine oil analysis reports with my C63 so far. Unfortunately I started the testing with the second change of oil which went in the car at 3886 km and was tested when it came out with 10,626km. on the car.
A few noteworthy points;
-notice the levels of iron, aluminum and copper continually dropping over time as the engine wears in. This has coincided with a continuing drop in oil consumption. This puppy is still breaking in after 20,000km.
-see the higher levels of silicon (dust/dirt) from the oil changes that were run through our Alberta winter. We have alot of fine dust from sand and gravel put on our roads during the winter. In other areas I have lived where they put alot of salt on the roads we would often see much higher levels of sodium in the oil from this.
-Previous testing indicated fuel dilution but for some reason nothing this last sample. This may be because this last sample was taken after a long drive where the engine got good and hot for a while.
-To the concern of those here that I didnt use Mobil 1 oil and I used a 0w30 to boot. OMG! my engine didnt blow up and I got an excellent analysis report. LOL
-Finally, to those (living in ideal, clean temperate climates) telling everybody else how long you can run the oil; you have no idea what is going on unless you do a sample. Our Canadian winters combined with short trip driving and hot summers can be brutal on the oil. See here that the first few changes were short and the lab, which sees oil samples from every type of vehicle, aircraft, etc. -They recommended the oil be changed as well.
You can do longer change intervals safely, with a by-pass system I have gone over 50,000km in my vehicles and many other by-pass equipped vehicles have commonly gone over 100,000km safely. You just have to monitor things to be safe.
Anybody else have any test reports to share?