Yeah I've just always used Mobile One, I really like it, never had any engine problems or carbon buildup and I've owned many Mercedes E-Class's since the early 90s.

I know it's what Mercedes recommends and it just works for me but I also take steps as well to keep carbon out of my engine, I have a telescope and I check the inside of my engine from time to time, never seen much carbon in any my Mercedes engines- here are my steps I personally take:

1. I always change my full synthetic oil every 5k Miles on time.

2. I always use 91 octane or more, and never fill up at cheap gas stations like Walmart Etc, mostly Chevron or Shell.

3. I do live in one of the largest cities in America but I will drive my car on the freeway at a high speed for at least 20 minutes to remove carbon from the engine. If you live in a city with lots of stop and go traffic and not driving the car very fast, it could produce carbon buildup in your engine.

4. I wait a couple minutes before I take off anywhere or before I shut the engine down.

5. I'm conflicted on using a fuel additive like liquid Molly on these newer e300s but occasionally I would use them on my older cars.

 

I believe fuel additives will do no harm when used correctly and are actually recommended for occasional use. Oil additives are a completely different story.

 

Hey JettaRed!!

Mercedes manual says not to use any additives! I'm too scared to use them on these newer engines, that are more complex.

What do you use and on what cars?

 

You won't have carbon build up inside of your pistons where the spark plugs go. You will have carbon build up on your intake valves though. The M274 engine is direct injection, which means the fuel injectors spray the fuel inside of the pistons, and not on top of the valves like older cars. This in return causes a massive amount of carbon build up on the intake valves. Only way to check out the carbon build up on your valves is to remove the intake manifold which entails taking off your intercooler and a bunch of other parts.

Below is a before and after pic of my intake valves on my E300 @ 60,000 miles. I've used 93 octane Mobil/Shell gas and 95% of the miles came from highway driving above 80 mph (I drive 90 mph usually). The worst part is that the picture below was the least amount of carbon. The other 3 were even worse. Restricting airflow by a lot I would say.



I've cleaned my intake valves twice now, and each time I clean them I can tell a difference in MPG and power. Not a huge difference, but these engines carbon up really quickly and does affect the MPG somewhat. As for question #5, you are okay to use Liqui Moly Pro-Line Engine Flush on your E300. I use half a bottle every 3rd oil change (I change my oil every 3,000 miles) and it seems to quiet down the ticking that the M274 is notorious for and also does feel like it runs more smoothly. Here are pictures of inside of my combustion chamber with 140,000 miles.






I would say making sure the engine runs for about 2-3 minutes in colder weather so the oil gets circulated enough and thins a little bit before driving, changing the oil around 5,000 miles, cleaning out the carbon from the intake valves, changing out spark plugs every 30,000 miles, and regular maintenance will keep the engine happy for a long time. Unless you have bad Wrist pins (Joking) (but not really).

 

hmmmm

The W portion of the oil is only for oil at ambient temperature (ie the oil has not hit it's operating temp window) and the centistoke at ambient temp will never be less than the operating temp centistoke (cSt).

ie a 0W-20 oil will never ever be the same cSt (also can be called viscosity) as a true 0 "weight" oil.

Also just to make sure the point is driven home.

A 0w-20 has a lower cSt at all temps than a 0w-30, 0w40.
At operating temperature, a 0w-20 has a lower cSt than 0w-30, 0w-40.
at ambient temp, a 0w-40 WILL have a lower cSt than, 5w-40 and 10w-40
At operating temp 0w-40, 5w-40 and 10w-40 will all have similiar cSt (based on additive packages etc).


<= part of many communities including Bob is the oil guy.

 

I think you will find Techron is recommended by most manufacturers. I use that on my 2014 C350 and 2015 SL400.

 

SL 400 Sweet car!!!

I had a 2001 CLK 55 AMG silver with black leather I regret selling that car it was fast and fun to drive not to mention very reliable!

 

The M113K engine is a beast! I worked with a guy with a 2003 E55 AMG who put a smaller supercharger pulley on it and the car was almost undrivable.

 

[QUOTE=JettaRed;9037495]The M113K engine is a beast! I worked with a guy with a 2003 E55 AMG who put a smaller supercharger pulley on it and the car was almost undrivable.[/QUOTE

Yes that was a solid engine, had one also the- AMG with the signature.

 

One again, here are 2 legal articles against Mercedes, two separate and different USA cites, showing the issue was with 2015-2016- C300, GLC300, mostly!

FYI: I know Mercedes sources engine parts, etc, etc from all over, but NOT ALL OF THE ENGINE PARTS FOR THE M274 CAME FROM THE USA!

-----> SOME COMPLETE FROM A- Z PARTS FOR THE ENGINE WHERE MADE IN BERLIN, HUNGRY, ETC AND THOSE COUNTRIES ARE NOT SHOWING PISTON FAILURE ACCORDING TO STUTTGART PLANT AND MANY OTHERS CONFIRMING THIS!!!!!

I even talked to my local Mercedes dealership after giving them my Vin and other information and they told me as well my engine/car is not affected by this piston failure!

Because I bought my car from Stuttgart, Germany, brand new- they did not source my engine parts from the USA, they just so happen to come from Berlin, Germany from A to Z complete, I just got lucky on that, because yes they can source them from anywhere depending on the supply demand!

The engine parts for the m274 that came from Nissan USA plant- is where the bad out of spec wrist pins came from according to Mercedes and others!

BTW, my mfg. date is 11/17, almost 2018.





and.........

 

...and I almost forgot, Stuttgart and my local Mercedes dealership both also confirmed and stated the same thing: The affective bad wrist rings came from engine # 274 920 30 406602

Not even close to my engine numbers!

Put your thinking hat on just for once, you know there were hundreds of thousands of these M274 engines sold/made, did they all go bad, no!
Maybe 2% out of hundreds of thousands!!

Why, because not all of the engine parts for the M274 came from Nissan plant USA, And I'm pretty sure that's why the plant was shut down fairly quickly years ago and stopped making engine parts for Mercedes!!

To everyone else, if your concerned, call Mercedes 800- 367- 6372 , they will know your Engine number from your VIN. Most likely if your M274 was not built from 2015 - 2016- (The production date is on the side of your driver door) and does not have this engine # 274 920 30 406602, you might be OK, I hope so!!

 

Now we are talking. The problem has never been the gasoline type, nor where it was bought, nor the LSPI (which exists), but a QUALITY ASSURANCE problem from the MB side (MB is 100% responsible for whatever their partners' mistakes may have been).

Whatever the rate of failure is, as soon as it is greater than 0 in this time and age of nearly mechanical perfection, a certain number of engines were defective, the manufacturer knew and played dumb.

 

lol yeah, Its a shame!

But putting bad gas in these complex engines with sensitive tolerances and driving it only in stop and go traffic all the time, could cause similar problems with these engines.

I haven't had any engine problems of my many years of owning the E class, I follow these steps:

1. I always change my full synthetic oil every 5k Miles on time.

2. I always use 91 octane or more, and never fill up at cheap gas stations like Walmart Etc, mostly Chevron or Shell.

3. I do live in one of the largest cities in America but I will drive my car on the freeway at a high speed for at least 20 minutes to remove carbon from the engine. If you live in a city with lots of stop and go traffic and not driving the car very fast, it could produce carbon buildup in your engine.

4. I wait a couple minutes before I take off anywhere or before I shut the engine down.

5. I'm conflicted on using a fuel additive like liquid Molly on these newer e300s but occasionally I would use them on my older cars.

 

Put the same HAT you suggested earlier, and think about the MB V6/V8 out there in the USA. How many had cracked pistons? It is a manufacturing issue isolated to that project.

Engineer hat here: if I have to rely 100% w/o margin of error the customer uses the product EXACTLY as documented, I have embarrassingly failed in my design. It is that simple. No need to sugarcoat anything nor excuses.

 

Like I said, I never had any Mercedes engine problems, v4, v6 or v8 had all those engines, in E class and CLK's mostly.

 

I literally don't know why you keep on replying and going on about the engine and whatever. If you need to keep reiterating and to believe all of what you said that much to sleep better at night then fine. But you're being a little too obsessive over it.

1. We get it, your bullet proof M274 is the best engine ever made from Mercedes ever because it was "bought in Germany" (supposedly) and "you take steps 1,2,3,4,5 etc". No one cares. We all do regular maintenance on our cars. Also, FYI, just because you bought your Mercedes in Germany (supposedly), doesn't mean it's anymore German or better quality than the E Classes in the United States. You literally bought a car that was destined to be brought over to the USA anyways. Whether you went to Europe to pick it up (supposedly), or whether you bought it at a dealership in the USA (probably what happened), its still a North American E Class. It was made for the US market. So it has the same parts/specifications that any E Class would have in the US. If you bought an E Class that was made specifically for the European market, then you would have to change the head lights, tail lights, dashboard, windshield, and the ECU would have to be programmed for the North American territory. Euro market E Classes have different specifications than the US market E Classes.

2. The fact is there are countless number of people who experienced wrist pin issues AFTER 2016. Check out the forums and you'll find examples of people with those issues on later year M274's. I for one had a late 2017 production E300 and my piston #1 scored the cylinder walls because my wrist pin wasn't within specification. NOT because of "bad gas". My 2018 E300 I have currently, i put in 89 octane fuel from an Irving gas station (low grade fuel) two nights ago and traveled more than 300 miles and it still didn't blow up. So, again, it's not because of bad gas. Not sure what isn't clicking inside of your little brain that the M274's were blowing up because of "bad gas". It's because of bad parts.

Your post was about how long your turbo will last. The answer is a long time. Let's end it with that.

 

I think you're wasting your breath trying to explain it to this guy. He's 100% certain that the engines are blowing up because of "bad gas". I would just let him believe whatever he wants, he doesn't seem to understand the concept of a manufacturer f*ucking up a production line part and then not doing anything to fix it. He's stuck in this fantasy land that the gasoline in the US is worse than every other country in the world and that the M274 only had issues in the US because of that "bad gas".

Massimo doesn't understand that the US is the #1 country in the world that uses the most amount of gasoline. Germany is like #11 or something. Not even a close comparison. I wonder why the remaining 300 million gasoline powered cars in the US aren't blowing up......

 

[QUOTE=Massimo Here;9038124]...and I almost forgot, Stuttgart and my local Mercedes dealership both also confirmed and stated the same thing: The affective bad wrist rings came from engine # 274 920 30 406602

Did you eat paint chips as a kid, do you know how to read?

I clearly said it was the Nissan plant USA- but my M274 parts did not come from there!!

one more time, read it really slow...

Because I bought my car from Stuttgart, Germany, brand new- they did not source my engine parts from the USA, they just so happen to come from Berlin, Germany from A to Z complete, I just got lucky on that, because yes they can source them from anywhere depending on the supply demand!

The engine parts for the m274 that came from Nissan USA plant- is where the bad out of spec wrist pins came from according to Mercedes and others!

BTW, my mfg. date is 11/17, almost 2018.

...and I almost forgot, Stuttgart and my local Mercedes dealership both also confirmed and stated the same thing: The affective bad wrist rings came from engine # 274 920 30 406602

Not even close to my engine numbers!

Put your thinking hat on just for once, you know there were hundreds of thousands of these M274 engines sold/made, did they all go bad, no!
Maybe 2% out of hundreds of thousands!!

Why, because not all of the engine parts for the M274 came from Nissan plant USA, And I'm pretty sure that's why the plant was shut down fairly quickly years ago and stopped making engine parts for Mercedes.

and..


One again, here are 2 legal articles against Mercedes, two separate and different USA cites, showing the issue was with 2015-2016- C300, GLC300, mostly!

FYI: I know Mercedes sources engine parts, etc, etc from all over, but NOT ALL OF THE ENGINE PARTS FOR THE M274 CAME FROM THE USA!

-----> SOME COMPLETE FROM A- Z PARTS FOR THE ENGINE WHERE MADE IN BERLIN, HUNGRY, ETC AND THOSE COUNTRIES ARE NOT SHOWING PISTON FAILURE ACCORDING TO STUTTGART PLANT AND MANY OTHERS CONFIRMING THIS!!!!!

I even talked to my local Mercedes dealership after giving them my Vin and other information and they told me as well my engine/car is not affected by this piston failure!

Just because you had a piston problem, does not mean everyone else will.

 

Did you eat paint chips as a kid, do you know how to read?

I clearly said it was the Nissan plant USA- but my M274 parts did not come from there!!

one more time, read it really slow...

Because I bought my car from Stuttgart, Germany, brand new- they did not source my engine parts from the USA, they just so happen to come from Berlin, Germany from A to Z complete, I just got lucky on that, because yes they can source them from anywhere depending on the supply demand!

The engine parts for the m274 that came from Nissan USA plant- is where the bad out of spec wrist pins came from according to Mercedes and others!

BTW, my mfg. date is 11/17, almost 2018.

...and I almost forgot, Stuttgart and my local Mercedes dealership both also confirmed and stated the same thing: The affective bad wrist rings came from engine # 274 920 30 406602

Not even close to my engine numbers!

Put your thinking hat on just for once, you know there were hundreds of thousands of these M274 engines sold/made, did they all go bad, no!
Maybe 2% out of hundreds of thousands!!

Why, because not all of the engine parts for the M274 came from Nissan plant USA, And I'm pretty sure that's why the plant was shut down fairly quickly years ago and stopped making engine parts for Mercedes.

and..


One again, here are 2 legal articles against Mercedes, two separate and different USA cites, showing the issue was with 2015-2016- C300, GLC300, mostly!

FYI: I know Mercedes sources engine parts, etc, etc from all over, but NOT ALL OF THE ENGINE PARTS FOR THE M274 CAME FROM THE USA!

-----> SOME COMPLETE FROM A- Z PARTS FOR THE ENGINE WHERE MADE IN BERLIN, HUNGRY, ETC AND THOSE COUNTRIES ARE NOT SHOWING PISTON FAILURE ACCORDING TO STUTTGART PLANT AND MANY OTHERS CONFIRMING THIS!!!!!

I even talked to my local Mercedes dealership after giving them my Vin and other information and they told me as well my engine/car is not affected by this piston failure!

Just because you had a piston problem, does not mean everyone else will.

 

Again.... Congrats on all of that. You still aren't getting it. You must've been dropped on your head when you were a baby. I'll end the convo here. Have a great rest of your night and enjoy your car.

 

You guys really need to give it a rest. Nobody cares who can **** farther.

 

"" My 2018 E300 I have currently, i put in 89 octane fuel from an Irving gas station (low grade fuel) two nights ago and traveled more than 300 miles and it still didn't blow up.""

Never said it would blow up, its just a slow death of your engine if you use 89 octane on a 2018 E300, what a moron!!!

I see more future problems for you LMAO!!!!

 

lol, JettaRed help me, I fell like I dumb it down for him as far as it can get!!

I mean my God if I'm wrong I'll be the first to admit it no problem but I talked to Mercedes in Germany my local dealership 2 Engineers from Mercedes a local engineer here in my city and they all said the same thing and gave me the engine numbers that were bad which aren't mine and both Germany and my local dealership said I my engine was not affected by this piston failure!

They know exactly what engines have those faulty Nissan parts on them, but its not all of them!! A small percentage compared to the many built! Hundreds of thousands of these were made only 2% out of all of those are bad and the majority are in California.

Sounds like he's mad at the world because it happen to him, and this is a guy that uses 89 octane fuel on a 2018 E300, tells you something! lol

I would never even think about using anything less then 91 octane on these DI engines!

This is why you see most of these cases in California, because the gas prices there are so high, they cheap out not realizing the slow death they are bringing to these DI engines!

 

This just tells you how stupid and ignorant you are.

1. Mercedes never used "nissan parts" in the M274. The M274 is a Mercedes designed engine. The M274 was used in Infinity automobiles. Where the heck are you getting Nissan from now? You're trying way too hard dude.
2. I have two S Classes, an E Class, a GT63, and i'm looking to buy a CLS63 AMG in a few months. I have a Mercedes ML, and a 2020 VW Passat in Europe. I literally don't care that it happened to me. I have other cars to drive every day of the week on two continents. I take apart my E300 engine for fun and put it back together. So even if my S class did blow up, I wouldn't be mad about it. It's life, sh*it happens. I also got mine covered under warranty and sold it, so I never lost any money on it. So don't care.
3. I had to use lower grade octane because 93 octane wasn't available you flaming moron.
- Since you don't know the english language and can't read, i'll explain it one more time to you. My E300 that blew up I used 93 octane always. It still blew up. My current E300 i put in all kinds of low grade fuel and sometimes even 91/89 and I have 140,000 miles. Still hasn't blown up.

You literally sound stupid by repeating your self. I would suggest you just quit. No one said your car is affected by the bad wrist pins, no one said your cars going to blow up. It was said that hundreds of M274's engines failed from 2015 and on. The thread got derailed by you believing your cars going to blow up, which it more than likely won't.

Also another FYI - Using 89/91 octane won't destroy your engine over time. If your cars NOx sensors/ECU detects that you are using lower octane, your car will change the timing to compensate the lower fuel octane you put in to prevent pre-detonation. That in return will cause your engine to run less efficiently and lose some power.

If that didn't make sense let me explain it even further: It won't blow your engine.

If that doesn't make sense then go get your head checked.

You are dismissed, clown.