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Liqui Moly - Ceratec

mbzclk

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Hi guys.

Not used this product and Mercedes state not to use additives but a few people on various forums swear by this stuff.


Has anyone used it or have any comment on it?

Che
 
Hi guys.

Not used this product and Mercedes state not to use additives but a few people on various forums swear by this stuff.


Has anyone used it or have any comment on it?

Che

Unfortunately whether the product is any good or not, if unproven or not been used by Experienced MB Owners or Maintenance Engineers, it will be Classed as " Snake oil"😳
 
As a rule, it is recommended to use fluids carrying the relevant MB Spec Sheet certification, and no additives.

You should only use additives if there's a problem you're trying to solve (e.g. Hydraulic Valve Lifter treatment for noisy tappers, etc).

That said, it's your car....
 
I wondered as much myself. Just curious really as I was browsing Liqui Moly products.

I noticed the Amazon reviews so wondered snake oil or magic?

I used Forte DPF cleaner years ago when I owned a CLK 320 CDI and it worked brilliantly.
Else most others are always regarded as snake oil!
 
Even if these treatments do reduce engine wear... it is very rare for engine wear to be the cause of any issues nowadays. The majority of cars today will get scrapped well before their mileage reaches anywhere near the end of their engine's service life. And the majority of engine failures are not related to gradual wear of the type that could (potentially) be mitigated by additives.
 
So many owners on the American Mercedes forum use LIQUI MOLI its worth thinking about it . Most new cars back in the 50s had a Moly Slip in the engine from new ,, then at the first service it was removed and filled with a normal oil .
 
So many owners on the American Mercedes forum use LIQUI MOLI its worth thinking about it . Most new cars back in the 50s had a Moly Slip in the engine from new ,, then at the first service it was removed and filled with a normal oil .

I think this was related to the initial 'running-in' process, when the engine parts were mated to each other, but with modern manufacturing techniques the parts are precision-made and the traditional 'running-in' is no longer required. I do remember long motorway journeys with my father in a new car for the first 500 or so miles.....
 
My thinking is that if none of the oil giants put it in their top oils, then it probably shouldn't be there..... it's a competitive market, and someone would have produced oil that includes these particular friction-reducing additives, if there was a mechanical and/or marketing advantage in doing so.

With regards customers' satisfaction... how can a customer independently test the product? How do they know that it made any difference whatsoever? Perhaps they can see an improvement in power on a dyno, or improved mpg (both suggesting reduced friction). But firstly this is rarely done in controlled laboratory conditions, and then reduced friction isn't proof of reduced wear - you'll get better bhp and mpg simply by using very thin oil.

The proper way of testing these products is by taking several identical new engines, dividing them into two groups, one with the additive the other without, running them in identical conditions that simulate the varying loads in normal driving, then taking the engines apart and measuring wear.

But short of that, what owners usually mean when they say the product 'worked' is that it had no ill-effects, or that they subjectively feel that the engine is 'running better'. Which does not mean much.
 
Just heard Tasos prescribing Ceratec saying "It's not bad" at 24.35. If he prescribes it I would agree as it is approved to be used. He is the M156 guru from my point of view.

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If I can't try it on one of these displays, then I'm not buying it
 

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Hi guys.

Not used this product and Mercedes state not to use additives but a few people on various forums swear by this stuff.


Has anyone used it or have any comment on it?

Che
Do MB recommend it or put it in their cars?
 
I think this was related to the initial 'running-in' process, when the engine parts were mated to each other, but with modern manufacturing techniques the parts are precision-made and the traditional 'running-in' is no longer required. I do remember long motorway journeys with my father in a new car for the first 500 or so miles.....

Most people do not bother to look at their owners manual but, mine says:


Screenshot 2022-02-13 at 08.44.00.png
 

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