Wow, how can AMSOIL 5W-40 European Car Formula not be on that list for AMG cars? It even meets all 3 of these specs, Mercedes Benz 229.3, 229.51 and DaimlerChrysler MS-10725 . Any other oils meet all these specs? Been using this stuff for all my German cars for years. I even read online that Chrysler dropped Exxon/Mobil as their oil supplier, and is using other oils now at the steelerships.

 

I know, Amsoil should be the official for many car maker!

I will post some comparison soon, just for the fun!

 

Sure glad to have access to information. I take it in then distill it to get the bs out.Just like the ads for drugs. I buy no drugs. I take no prescriptions. I use Epsom salt to get my magnesium. low cost safe and effective. a daily bath. In my Crossfires I use Mobil 1 10-40. In both cases I take the risk (NONE). Gary

 

I get a chuckle when I read that one oil is so much better than another. Goes to show the power of marketing.

 

Amsoil doesn't meet the specs because they don't actually send their oil to MB to be tested, and won't pay MB the fees needed to have their oil tested for the proper certification.

So they just say that their oils "meet" the MB specs, but they haven't actually proven it.

I'm sure the oil would pass the specs if sent in, but until they pony up the cash in order to get it done, and then recertify their oil every time they change the formula, they are never going to be included on the official MB approved oil list.

Same thing applies to other famous boutique oil companies, like Redline and Royal Purple.

BC.

 

The way I see it MB wants me to use the following for my 05 FSS monitoring system.

Must meet MB 229.l3 or 229.5
Preferred weight 0W-40
And if the SRT-6 is considered AMG NO 30wt

That considered my current plan is to use 0w40 or 5w40 which ever I find first.

An assumption that a dealer does anything right is just that...an assumption. They likely get it in 55 gal drums- 1 for gas and one for Diesel.

I guess what I really question is does spec 229.3/229.5 define viscosity. I suspect not but I have not been able to locate them.

 

I can't really say for sure what oil they had in my Graphite Roadster. Called the dealer that the previous guy used. They said they used a Chrysler approved synthetic oil of (I can't remember now) either 5-30 or 10-30.

I just changed the oil back to Mobil 1 0W40 - and at startup, it quiets down much faster and idles DEAD QUIET. I usually believe in heavier oils, always have.

But for this car, I'm sticking with Mobile 1 0W40.

 

Mercedes approved lubricants etc as of 2007.
http://www.startekinfo.com/StarTek/o...stedDocId=9511

Mercedes Engine oil recommendations as of 2010
Mercedes-Benz Approved Engine Oils AMG Market | AMG Mercedes-Benz Enthusiasts

More oil lists for Mercedes (compiled and unofficial)
Mercedes-Benz Engine Oil Recommendations

Note
MB oil spec 229.3 is not recommended for use after model year 2004. (2004 Crossfires are more expendable )

 

The differences between 229.3 and 229.5 are primarily length of use (229.5 is used for 10k to 15k mile intervals, while 229.3 is up to 10k), and fuel economy (229.5 oils are slightly lighter, and provide a tiny bit more fuel economy).

Neither spec defines overall viscosity. Various 0W30, 5W-30, 0W-40, and 5W-40 all meet the specs.

Are you pushing the oil past 7k miles?
If you are following the FSS, then you most likely aren't, and the 229.3 oils are perfectly fine. If you're running an SRT-6 engine, then yes, you should stick with a 40 weight oil. My opinion is that you would want to stay away from an oil that is famous for thinning down to a 30 weight oil in a couple thousand miles, according to Oil Analysis testing, however.

What's the point of paying a premium for a 40 weight oil that turns into a 30 weight oil when you look at it funny?

BC.

 

Actually the question would be about 5W-30 in this case. menards has a rebate sale right now on Quaker State 5W-30 full synthetic oil for $2.00 a quart. I looked to see if they had 5W40 because it's a tad thinner, but no such luck. I change the oil once a year, I live in MN and run the car generally March thrugh Nov. Air temp range probably between 35 and 90.

What are your thoughts on this weight? Thicker since I don't run it in winter would seem to be fine, since it's being run at higher ambient temps anyway. Would already have seemingly ok viscosity, but then again I'm not an oil engineer. Thoughts would be much appreciated. Mark

 

I've always run valvoline in my cars. I emailed valvoline and they recommended the 5w-40 for my srt6 and said it met the mb qualifications. Valvoline and k+n oil filters kept my srt4 running at 380whp with over 100k miles and no sign of slowing down.

 

I think you have things reversed. 5W-30 and 5W-40 both start out thin cold (low viscosity). After the engine warms up the 30 is thinner than the 40 weight. So, 0W-40 is very thin when cold and the viscosity goes to 40 hot.

 

Also, the 5W-30 is not recommended for the SRT-6 motor, but is fine for a N/A motor, as long as it is actually the right stuff that meets the MB specs.

BC.

 

This MB oil requirements is all about FSS and very extended oil change intervals. Tight specifications are required when you have to warranty the results of getting the last mile out of the lube.

I wonder what the specs are for brake pads.

Life time to a manufacture is often the length of the various warranties.

 

well, FWIW, I checked with the Chrysler dealer, and they checked Chrysler for me, and 5w-30 is a no-no. syn or not. 5w-40 is fine for the NA in syn. So based on this, since I only change once a year anyway, I'm going to stick with the 0-40 when I can find it and when I can't will do 5w-40 full syn. That should put that to rest. Interesting, he said that in any engine breakdown he's had, the mfg or warranty company has never asked for an oil sample for analysis.

 

If you ever wanted to push it, just show them one of the 5W-30 oils that meets the MB spec, and show them your oil requirement page from your owners manual, and ask them if they would win or lose the case in court with this proof if they tried to deny your warranty while you used this oil.

They would have to back down.

BC.

 

Attached is a document that goes over the various oil specs per M-B over the model years and the oils that qualified under those specs. I've highlighted things I thought were important to XFire Owners. A little dated by now, but still good reference material.

(Note: I've posted this elsewhere in The Forum, but changed the file name rather than search for the previous thread.)

Later,

 

LEICHTLAUF HIGH TECH | 5W-40

SPECIFICATIONS:
API SAPI SM/CF, ACEA A3-08 / B4-08

APPROVALS:
MB-Approval 229.5 for High Performance Models
incl. AMG; Porsche A40, Renault RN 0700; Renault RN 0710
1L Part No: 3863
5L Part No: 3864
Note: Supersedes P/N 1306 & 1307


Have any of you guys considered this oil? I like the part where its approved for AMG

These guys are also a recommended oil for Aston Martin so thats always a good thing!

 

It certainly sounds fancy lol

 

I have read that 0 weight is good for a few extra HP over the 5w. A high mile engine will benefit from a thicker viscosity oil. If you want the best possible oil look into Joe Gibbs Racing Oil. It not legal for a street driven car becuase it contains some stuff that your engine loves but the EPA doesn't, but when was the last time authorities tested your oil You can buy it here or also form Roush/yates racing. The stuff isn't cheap!

JB Racing - General Products