Benzers,

how can you reduce engine noise??

I have heard that there is some commercail chemicals like Motor-UP, who can reduce the engine noise, is that true.


what type of Engine oil do you advise, I have 92 E200, and I have been advised to use the elf BXI engine Oil,

Any recommendations or advises to reduce the engine noise, as much as possible.

I have used Motor-Up and ZMax in my 1995 C280, and both helped, if any. DIdn't really notice much of a difference on this car. But I believe it won't do any harm, only increase longevity. Although I used to have a1996 Jeep Grand Cherokee and I used MotorUp in it once and it made a vast improvement over smoothness, noise level and power. I would suggest using it. It's a small price to pay for what it can do to your engine.

Its your car, do as you see fit, but MB specifically warns that NO engine oil additives should be used in their engine. In fact, they state it will void the warranty. Most high end engine rebuilders also will void their warranty if they find out you've put Slick 50, Motor Up, Dura Lube, or any other of the "Pep Boys" stuff in the oil.
Again, it your cars, but its pure, unadulterated Mobil 1 for me.

The fact that you have an E200 makes me think you are in Europe..if this is the case them you should check to see if you have a hood pad insulation underneath the hood (bonnet)..it acts as a noise filter and is standard on US benzes.

Hood pad insulation
 

Any body knows where is the hood pad insulation, that can reduce engine noise!!!

Any kind of hood insulation that is OEM. Are you talking about that Dynamat stuff? That you can get at any stereo store.

Ehh no. The hood insulation is a 3M or OEM made foam like pad that is "glued" to the inside side of the hood. Its about a 1/2 an inch thick and sometimes has a waffle like texture depending. If your driving a benz that does not have this insulation you'll sometimes see water evaporating on the hood when its raining and the engine is hot.
Talk to a UK dealer if they can get it for you.
OOORRRR try the parts shop at this site.

[Edited by yal on 01-23-2001 at 11:09 AM]

I would be inclined to replace the hood lining first off, this goes a long way to keeping engine noise inside the engine compartment. There are plenty of threads on this site on how to replace this lining, it's cheap and easy to fix and goes a long way to eliminating a big part of the under hood noise. Adding oil additives is not the way to go with noise, if there is a problem, identify it and fix it. The only servicing with oil that is available is that you change it often and change it hot, I do mine every 3000 kms !

Yes I agree, when my engine is hot and it's raining i see the evaporation on the head. but I have it on my car, does that mean it needs replacement!!!

does it also reduce the engine noise inside the cockpit!!!

E200 Engine Noise
 

I with some others who have replied. Stay away from additives. What kind of noise are you hearing. This may be a precusor to something more serious.

mrsilico, What does your 'hood lining' look like? Does it cover the whole underside of the bonnet from front to back?

The previous owner may have used additives that have permanently damaged the engine. Check out the article below:

http://www.bmwe30.net/cgi-bin/technical/index.cgi?db=default&uid=default&ww=on&ID=108&view_records=1

OMG, well, I'll never be using engine oil additives in my Mercedes ever again!

Actually, I saw it,it doesn't cover the whole hood.


The noise is actually, the engine noise, it's normal but I know mercedes cars, they try to make very silent cars. and my cars looks normal to other cars but it's Mercedes!!, I should hear a little bit of that engine roaring.


So what do you suggest!!!

Ok mrsilico, here is the thing. I have a grey market 230E so I know. The hood pad that comes with a european car is tiny and only covers a tiny portion of the hood, the part closest to the windsheild. Now the US hood pad covers the whole hood from tip to stern. It does help to supress the noise and gets rid of that evaporation effect.

Yes thats true, but from which material is made!!

and how can I cover the whole underhood, is it a something that can be sold!!

Yes thats true
 

Yes thats true, but from which material is made!!

and how can I cover the whole underhood, is it a something that can be sold!!

Its made from foam. Ask your dealer about it!! Or order it from this site! Go to the below thread to figure out how to install it using 3M super trim adhesive or equivalent. I think I have given you all the info I can give on this...good luck!!!:confused: There is nothing left to say.

http://www.peachparts.com/shopforum/diesel-discussion/9451-85-300sd-hood-insulation-needed.html

Thanks a lot yal....

But, are you sure that it will reduce the noise to its minimum, the engine room is not closed 100%.

there are ingates behind the wheels, so it's not 100% closed and the noise will be heard even if there is pad insulations

Mrsilico, I too have replaced the hood pad on my 1989 300SE with much success. All the advice given is accurate, so there is nothing new to add in terms of the hood pad. I would like to comment on the noise level in general. It has been my personal observation that older MBs, which yours can be considered, are not as "quiet" as the cars of today. Of course, quiet is relative and objective, but new cars are noticeably quieter. The Japanese car companies raised the bar on this issue, and consumers demand it today.

On another front, as a car ages its sound deadening materials tend to disintegrate. Just as the hood pads tend to go, so does the sound deadening at the firewall and elsewhere.

Enjoy your MB.

George