rattling noises on my G35

[Ken]

i have a 2006 infiniti G35 sedan and it rattles as i accelerate sometimes louder than other times but pretty much its constant. i was told to add mystery oil or similiar product and i did by doing so it reduces some of the noise but it’s stil there any ideas what needs to be repaired?

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[Daniel]

A metallic rattle would most likely be a heat shield on the exhaust. I wouldn’t recommend using any type of additive to fix an engine noise, cause all your doing is covering up the noise. Usually a noise is caused by something that needs attention. If the problem is not addressed the results could be catastrophic. If you are having a tapping noise from the engine it is most likely the valve train. You may just be low on oil or your valves may need some adjusting

[EricTheCarGuy]

What octane are you using? I believe that engine calls for premium. If you’re not running premium this could be the cause of the noise.

[KZ 259]

yeah, adding any kind of additives doesn’t fix the problem. it’s more of a gimmick than anything else. eric is correct with the octane. the VQ35DE requires premium fuel. i know this because i also own a VQ35DE. is your G35 a 6MT, by the way? how many miles? if you’re G35 is a 6MT, you might have the infamous oil consumption issue that is plagued on the REV-UP VQ35DEs. from what i read, this is where the piston ring(s) wear out prematurely and allow oil to escape the chamber and get burned by the spark plug.

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