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M275 V12 Bi-Turbo Platform Technical discussion relating to models sharing the M275 V12 Bi-Turbo (V12 TT). Including SL600, SL65 AMG, CL600, CL65 AMG, S600, S65 AMG.
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High mileage club

 
Old 06-30-2011, 07:23 PM
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S600
High mileage club

These engines are getting on a bit now and I was wondering what the evidence is regarding their longevity. I'm only interested in the engine. Right, I'll start:

My S600 has done 143,500 miles. It's had the usual coil pack issues but no other problems. I do notice a puff of smoke on start up sometimes which may suggest the turbo seals are getting a bit tired. With a stage 1 Eurocharged tune, it still goes like stink! Currently has a whining noise from the front, which I think might be one of the pulleys on its way out.

Cheers!

Alanb
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Old 07-07-2011, 11:25 AM
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Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Can't really add anything here. My 2005 SL600 only has 37K. I get a Blackstone Labs report every 5K miles with every oil change, and they state the internals look pristine.
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Old 07-07-2011, 11:38 AM
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S600
I've not heard of any design issues with these engines and, given that they are so understressed most of the time, I can imagine that they are quite long lived.

I'd be interested to find out about the lineage of this engine. I'm guessing it's derived from the M137 and maybe this was derived from the M120?

Alanb
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Old 09-03-2012, 05:39 PM
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Not the most popular thread in the World, but I thought I'd record for posterity that the car I bought from drabux has just done 150000.

It wasn't a very auspicious day; I was cruising along in traffic at a frustrated 70 mph at the time, and shortly afterwards it started miss-firing again. And that, after having replaced the troublesome original RHS coil pack a week before. I was on my way to a motor factor to buy a manifold pressure sensor - the one downstream of the throttle. I had already replaced the upstream MAP sensor; both primary lambda sensors, which had become very sluggish, and the coil pack.

But it still wasn't running right. The DTC's were showing rich running, just as they always had, and the coil pack didn't change that. I figured the downstream sensor was probably to blame, so I changed that at the weekend. Today was the first day when I completed a journey without the MIL lit up, and I'd been giving it the beans at every opportunity. I'd never dared do that beforehand.

Its early days yet, but so far it seems I'm back to care-free driving, and what struck me was how smooth and quiet the engine was. So much so in fact, that I drove home all the way with the stereo off, just to marvel in the refinement. I owned two N/A S600's before this one, and good as they were, the BiTurbo's in a different league.

After scouring the info on this forum, I guess the engine block's ladder-frame must get some credit, plus the intake and exhaust silencing effect of the turbos. The windscreen has been replaced at some point, and the sealing isn't to factory standards, so there's a little bit wind noise that shouldn't be there. I can probablay do something about that. The whining transmission, I will probably live with.

Nick (fingers perpetually crossed)
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Old 09-08-2012, 12:14 AM
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03 S600 11.7 @120, CL600
I have 116K on my 2003 S600. I had to change the coil packs at 96K and the ABC pump at 108K.
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Old 09-14-2012, 01:36 AM
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Cl65 AMG
CL65 05 111K I have replaced the coils and plugs. Runs perfect.
An incredible cars !!! I bought it from a mature guy who used it as a daily driver and drove his hand built Bentley on the weekends. What ever goes wrong I will fix it myself. I drive it every day as well.
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Old 09-16-2012, 11:58 PM
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98 GS400, 86 MR2, and more
I've seen a 03 CL600 with over 400k kms recently in for a service, leaking oil a bit lol. That's about 250k miles!
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Old 10-03-2012, 05:13 PM
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'09 Challenger SRT8, '05 CL65 AMG and '07 GL450
102k CL65. I've had it a year and replaced both coil packs, idle pulley, plugs, motor mounts, tranny mount, pilot bushing, drive shaft bushing (can't remember the name), 4 sets of tires (lol..seriously...) and other odds and ends. The guy before me replaced some ABC stuff. Runs like it's brand new now. Hell, for how much I spent on repairs it better! However, I would rather repair this than my SRT8 and this thing turns lots of heads.
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Old 10-08-2012, 05:31 AM
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CL600
115,000 miles was a few weeks back, got it when it only had 62K miles... as far as engine, done both my coil packs, and some IAT sensors a turbo coolant seal, and a few coolant lines... still leaking coolant out the oil pan at times, but most of the time its fine... dealership still cant find the issue. other then that, seems to be doing ok.
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Old 11-19-2012, 06:40 PM
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2005 Mercedes S600, 2004 Mercedes E500 4-Matic, 2002 Mercedes C32 AMG, 2001 Trans-Am WS-6
105,000 on my 2005 S600
Daily driver.

Various assortment of items repaired/replaced including both coil packs (~80k mikes), plugs (80k), secondary air pump (100k), radiator (80k), dual valve (70k), pushbutton control unit (70k), coolant resevoir (90k), transmission conductor plate (90k), and ABC hoses (it "dry rotted" and burst - 80k), brake rotors (60k, 90k), multiple sets of tires (averaging about 10k miles on the rears and 15k on the fronts)...

ABC pump has been whining, but knock on wood, seems to be holding.
Also occasional smoke at start and a bit of a turbine whine at high rpms.
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Old 01-25-2018, 01:02 AM
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CLS500 AMG package 2006, CL600 2002, SLK230 kompressor 2003 sold, E500 2004 sold, BMW 335xi M sport
how mani miles has by now you V12? im curious sinche this post was from 2011 and you had 143k miles, do you think it can pas 250k mark?
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Old 01-25-2018, 06:42 PM
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Originally Posted by Jurgeenh View Post
how mani miles has by now you V12? im curious sinche this post was from 2011 and you had 143k miles, do you think it can pas 250k mark?
I bought Drabux's car in 2012, and it's been the subject of the threads in my signature. ie: it's been a long story. I have a long list of repairs and mods.

It's running well now - I've been driving it to work every day recently - and has just gone round 164,000.

Nick
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Old 01-26-2018, 01:12 AM
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Cl65 AMG
223000 runs very well, I need to swap out the coils having issues with one cylinder due to a dead coil tower. These car will fire a cylinder even if it only has one coil firing. I know because my number 10 cylinder has only one coil working, fires until higher rpm (above maybe 4k and boost). Great Car !!!
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Old 02-12-2018, 01:29 AM
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CLS500 AMG package 2006, CL600 2002, SLK230 kompressor 2003 sold, E500 2004 sold, BMW 335xi M sport
Originally Posted by Welwynnick View Post
I bought Drabux's car in 2012, and it's been the subject of the threads in my signature. ie: it's been a long story. I have a long list of repairs and mods.

It's running well now - I've been driving it to work every day recently - and has just gone round 164,000.

Nick
what kind of repairs? i imagine more ABC related perhaps due the age of the car, the old high pressure lines will develop problems, im verry inclined to buy a CL600 2008-2009 or the CL63 AMG same model year, but its hard to decide between the AMG due the awesome body kit or the V12
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Old 02-12-2018, 01:42 AM
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CLS500 AMG package 2006, CL600 2002, SLK230 kompressor 2003 sold, E500 2004 sold, BMW 335xi M sport
Originally Posted by driveability View Post
223000 runs very well, I need to swap out the coils having issues with one cylinder due to a dead coil tower. These car will fire a cylinder even if it only has one coil firing. I know because my number 10 cylinder has only one coil working, fires until higher rpm (above maybe 4k and boost). Great Car !!!
Any big issues so far at 223k miles? i mean its a pretty high mileage considering theres no much V12 TT out there, i like to keep my cars looooong
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Old 02-12-2018, 02:39 PM
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Originally Posted by Jurgeenh View Post
what kind of repairs? i imagine more ABC related perhaps due the age of the car, the old high pressure lines will develop problems, im verry inclined to buy a CL600 2008-2009 or the CL63 AMG same model year, but its hard to decide between the AMG due the awesome body kit or the V12
This is the work that I've done in the last five years:

Engine:
210 Rebuilt turbos with engine in situ
118 Engine mounts in situ
5 Long coil pack heat shields
1 Synchronised waste-gates

325 (MB Service)4
6
Diverter valves

7 T-bolt clamps1
09
Engine radiator

99 Engine fan
857 Coil pack
6 Throttle body gasket
295 (Ignition Switch)

Transmission:
395 Transmission rebuild
250 (Torque converterrebuild)
94 Conductor plate
8 TCM Connector
98 Oil, filter & gasket
34 Transmission mount
35 TCM Lock Lever

Suspension:
600 Wide front wheels & tyres
300 Compression jointed hoses
100 Fire sleeved hoses
10 Uprated front strut bushes
5 Uprated steering bushes
200 Rear struts

243 ABC pump
96 ABC accumulator
20 ABC height sensor
74 Bottom ball Joints

Charge cooling:
99 Engine radiator HE
100 Engine cooling pump
140 Custom pump controller
12 Coolant temp sensor
32 Header tank
12 Charge Cooler Bleeders
7 Insulated Charge Coolers


Consumables:
5 Windscreen seal
1 Raised rear seat cushion
100 Front tyres

192 Front discs
56 Front pads
100 Rear tyres
109 Rear discs
34 Rear pads
28 Rear shoes
76 Ball joints
57 Battery
158 Spark plugs
33 Speed sensors
55 Lambda sensors
68 Temp sensors
37 Boost sensor
50 Rain sensor
30 Lots of O-rings

Last edited by Welwynnick; 02-12-2018 at 02:41 PM.
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Old 02-21-2018, 09:56 AM
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04' S600
Saw your post about running rich and right side misfire

I was hoping you would read my post about limp mode and see if you had any advice. Ive spent countless hours at shops and on the forums trying to find someone that can help me. My right side misfires and shuts down while the dealer said its o2 sensor but my shop said they looked fine. I was wondering if you had any codes show up for you lamda sensors or map sensors.

thanks
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Old 02-25-2018, 10:44 AM
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Originally Posted by Welwynnick View Post
This is the work that I've done in the last five years:

158 Spark plugs
Maybe I'm not interpreting your notation correctly, but why so many plugs? At 24 per complete change, that's 6.58 changes (an odd number). recommended change interval is 60K miles, right? You said earlier the engine has 164K miles. The should be two changes so far.
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Old 02-25-2018, 11:27 AM
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Sorry, the number means how much I spent on each item in pounds.

So no, I didn't buy 57 batteries either (though it does seem to eat them!).

I just finished fitting the new throttle gasket a few minutes ago. There's a nice, easy, cheap upgrade.

Nick
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Old 02-26-2018, 10:53 AM
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Originally Posted by Welwynnick View Post
Sorry, the number means how much I spent on each item in pounds.
Yes, this occurred to me after I posted my query. Made more sense.

I was only looking at "spark plugs" because I'm trying to decide how important it is to adhere to the 60K miles recommended change interval on these motors.
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