eff these oil threads im done and out.

There is usually a lot of good information on this website

bobtheoilguy.com

they analyze used oil, and through some good reading you can determine for yourself the best/worst brand(s) of syn oil.

mcdonald's is the leading restaurant in the world, but that doesn't mean they have the best food...

Mobil 1 use to be good but they have changed their formulation so many times since then that it isn't that great anymore. Penzoil Plat and ultra are better than M1. And just because manufactures use it doesn't mean it's good. Just means they got a good deal on it that is all. BITOG UOA tests are good enough to show how good it is vs other oils and is proof. I stopped using M1 a while back and since now use Penzoil or Amsoil.

the n54 engine comes with Castrol from the factory.. i switched to 0-40w soon after. currently, i'm testing out royal purples 5w-30, seems to be fine.. however, only an analysis will tell. little shearing, but that is to be expected from FI engines.

i would assume a similar 5w-30 would be great for the VQ.

thats in sales, Mobil 1 is number one in quality satisfaction and consumer review.

Hmm where are they #1? Please show us the ratings that say this.

You'll find some guys here swear by Amsoil, others by the Purple stuff, others by Pennzoil, etc. Truth of the matter is, it boils down to personal preferences and budgetary issues. Since the 90s I've been using Mobil 1, with excellent results. Keep doing your homework & arrive at your own conclusion, dude. Good luck!

:iagree:I would also like to see proof!

As long as you change the oil within its specified range, I doubt you are going to see much of a difference over a 100k mile period. I think the key is to just change the oil regularly and not try to push the limits of said oil of your choice.

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.

^^^ word... Ive had RP in mine for almost 3,500 miles, and i am pleased with the results, i used to run Mobile 1 on her, and its all the same thing.

:iagree: And it's just that simple!!! Noone has yet come in here and provided proof that an engine will fail by using a 'crap' motor oil.

Oil is not just oil. There is a lot more that goes into making a quality oil than just petroleum. Of all things you can save money on, oil would be the last thing I would go cheap on.

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!