E-Class (W211) 2003-2009

Terraclean engine decarbonising

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Old Feb 10, 2013 | 06:56 AM
  #1  
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Mercedes Benz E320 diesel
Terraclean engine decarbonising

Hi all, I'm new to this forum and its my first post so be gentle !

I would just like to share my experience with a recent Terraclean, if you don't know what I'm on about click this link: www.terraclean.co.uk.

I had mine done at carmakeover in Wakefield last week and I have to say I am a bit sceptical normally with these things but it has made an incredible difference. My Merc E320 has 105,000 miles on it and the decarbonising took about 2 hours to run through, the car is now significantly quieter, certainly quicker and is giving me an additional 5-8mpg on average.
The best way to tell its making a difference is initially the car is kept at 2000 revs using a throttle positioner, the revs gradually increased by itself as the injectors etc were cleaned out and the throttle positioner adjusted back to 2000 revs each time is crept up.

The system cleans out the carbon build up throughout the engine and exhaust and cat etc, I can highly recommend it. Costs about £100 on a 3 litre car, there are places throughout the UK that are doing it too. Check out www.carmakeover.co.uk if you're in the West Yorkshire area and mention James, he's offered a trade discount if we get a few people to do it. I do not work for this company, only recommending as its the one I used

Great forum
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Old Feb 10, 2013 | 08:23 AM
  #2  
CharlieU's Avatar
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2008 E350 Sedan
I saw the episode of Wheeler Dealers where they used the system. It looked interesting as the dealers here charge you $50 to dump a bottle of gas additive in your tank. I imagine the results are better the more miles you have on the engine. I haven't noticed anyone offering this service in the states, but then I haven't looked too hard either.
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Old Feb 10, 2013 | 08:35 AM
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From: McLean, VA
2003 E500 Benz & 2015 BMW M235ix
I don't think my MB Dealer's service manager would recommend this approach for my vehicle. I do have some carbon build up at 120,500 miles which you can hear when accelerating, especially at low speeds. The manager told me to use the Techron fuel treatment to clear it out which I just added. The directions on the bottle indicates that you may need to use a second treatment if it doesn't clear out from one treatment. Since I'm retired and only work occasionally on consulting projects, I don't use the vehicle for very much high speed driving which can contribute to the carbon build up, so I'm also going to do some runs on the nearby 65 MPH toll road, and use my vehicle for a four hour day trip next week. Hopefully the fuel treatment and high speed will clear out the carbon.
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Old Feb 15, 2013 | 10:15 AM
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03 Eclass, 03 BMW 06 Porsche Cayman S, 03 Harley Davidson "bored & stroked"
Techron works as the bottle says, but you dont have to do high speed driving for it to work, it probably works even better in stop and go traffic
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Old Feb 15, 2013 | 03:39 PM
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Moral of the story? Lay into the throttle and give the car a good workout every now and then I talked to the owner of a local Mercedes independent shop - he's been working with Mercedes in Europe and the US for most of his life - and he told me that if you drive lazy the car will start to develop these types of issues with carbon buildup and low-speed wear problems. I drive very spirited so haven't had these problems, but he said even if you drive very sedate/low-speed most of the time, do some hard accelerations occasionally on highway on-ramps or somewhere legal. Even though "driving hard" is considered bad for your car by some people, remember these are luxury performance cars and after almost a year of working with my car, my mechanic told me the car is in great shape and also very very healthy mechanically. So I strongly believe that spirited driving - as long as you're responsible, don't break any laws, and you maintain your car to factory spec - is not bad at all and helps with carbon buildup.

Last edited by AMGAffalterbach; Feb 15, 2013 at 03:43 PM.
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Old Feb 17, 2013 | 12:13 PM
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Main dealers in the UK are now offering this as part of a service package, so its now being recommended by MB on high mileage cars.
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Old Feb 18, 2013 | 09:04 PM
  #7  
ozusa's Avatar
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2004 E320 4matic Sedan
It's a revenue opportunity

Originally Posted by jkspoff
Main dealers in the UK are now offering this as part of a service package, so its now being recommended by MB on high mileage cars.
This product may work as described and have no down-side, or be a risk to the engine. I don't have any data to say....but I don't take the fact the dealers can make a buck - or a quid - doing this as much evidence of efficacy.

I also do not believe an earlier poster's claim that it can add 5 - 8 mpg.

But that's just me, today.
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Old Feb 19, 2013 | 08:21 AM
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Originally Posted by Davel
Techron works as the bottle says, but you dont have to do high speed driving for it to work, it probably works even better in stop and go traffic
Techron works
Techron is approved by MB last time I checked
Techron is in the fuel at the pump when I buy it.
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Old Feb 20, 2013 | 03:41 AM
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Mercedes Benz E320 diesel
I take the points above as being valid, however having driven the car for many years and put loads of miles on it I know it like the back of my hand. It definately is more economical, no shadow of a doubt on that one, its doing between 5 and 8 mpg more than pre Terraclean. Also is definately quieter on tick over.
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Old Feb 20, 2013 | 12:49 PM
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Originally Posted by Davel
Techron works as the bottle says, but you dont have to do high speed driving for it to work, it probably works even better in stop and go traffic
Yikes, Techron in a diesel motor. That's a new one. I would do it. There is a Techron D but not available in the US.

Also "lay into it"..... the Italian tune up will be effective for some things, but not effective for carbon buildup in the intake of a diesel engine.
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