Question about 2006 Infiniti M35

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My 2006 M35X has 120K miles and still runs great. I started hearing a brief noise at higher rpms (sounded like a metal vibrating). My dealer said that the oil was low. I was surprised because I never had an oil consumption issue. There are no spots on the driveway and there is no blue smoke from the exhaust. I am seeing that the oil level is dropping very quickly. Do you have any idea what is going on?

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  • dcohen250 Nov 14, 2010

    Thank you for your response. Do you have experience with this model specifically? I would like to hear from people that have experienced the same situation on the same model.

  • dcohen250 Nov 14, 2010

    I would like to hear from an expert who has specific information about this model.

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On modern engines you no longer see the blue smoke when oil is consumed - the catalytic converter takes care of it. If no oil is lost externally then it's consumed by the engine - you will have to take the car for an in depth inspection, starting with the compression of the cylinders. In the worst case you will gonna have to replace the entire engine so do not accept any repair until you know fully what it will cost.
You might discover that it will be cheaper to replace the engine with one bought from a breakers yard than to have it overhauled.

Posted on Nov 14, 2010

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  • Master
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You can have leaky valve seals which will leak out oil through the exhuast as you drive at a very low rate. Usually it will show as a darker exhaust upon under a load such as when passing another vehicle or when you start the engine cold.

Posted on Nov 14, 2010

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