Royal Purple-->Mobil 1

370zFORme!! · 03-10-2010, 12:07 AM

Quote:

Originally Posted by Zsteve

I was told by the service manager that the ester oil was to help quiet things down in the engine and the only way I can see that happening is that it has to be more lubricated and I guess thats what the ester is suppose to do. But I just put in royal purple and have a couple hundred miles on it and I notice no difference in engine noise. Its loud to begin with.

When you say quiet things down are you speaking of engine slapping/knocking noise?

I just want to know what oil is best for making that slapping/knocking noise go away. I've been trying to choose between the Nissan Ester Oil and RP. My first oil change is coming up soon.

My dealer says its the injectors and all Nissan injectors sound that way.. Does that hold any truth?

Thanks!

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