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hi all, im currently driving a 2008 slk 280.
i have a problem, the car in the morning starts fine and runs smoothly,
after giving it a good run, switching off and returning a few hours later on start up i can hear a knocking that lasts for a few seconds.
its seams to be quite a heavy knock from the bottom of the engine and goes as soon as the oil gets around.
car has only covered 22k and had three main dealer services in that time!
can anyone throw some light on the issue as its spoiling the ownership experience,
regards,
nigel.
 

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Administrator 2009 SLK 55 AMG/Founding Member 2006
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A couple(or more) questions;

1. Has anyone stood outside the car(with the bonnet up) to listen for this "heavy knock", just to get a better idea of its location?
2. Have you checked the oil level, and how often?
 

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A friend of mine recommend me to use this product, the oil additive.
After added one bottle into my car the engine runs smoother,
I can literally feel the difference(most important point),
also the ticking sound/hesitation all resolved.

Give it a try, every 3000 miles after oil change you add it will optimize the result, but I add it before oil change anyway still feel the improvement.

Techron Concentrate Plus Fuel System Cleaner:tu:
 
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