Oil ??

[Amer-GTC]

Hi,

I search around forum but I coudnt find a answer. I import G37S last year from US to Bosnia and know I have to change oil. There is no Infiniti dealer in Europe yet. So can some on tell me what brand of oil they put in G37??? Thanks

[joe603]

I recommend a good synthetic.

Royal Purple is a fantastic oil and a true synthetic.

Mobil 1 is a decent oil, not a true synthetic but better than regular oil.

[SVTCOBRA]

I run Mobil 1 in all of my cars and it's been great. Recently, Infiniti opened up my sedan's engine to replace a faulting tensioner and called to tell me the engine was as clean as a pin and no sludge. It had 32K miles on it and I change oil between 3K and 3.5K miles.

I've been toying with the idea of switching to Royal Purple in the coupe only.Joe, did you notice all of the differences that our banned friend did??? I was always a little unsure of some of those super positive comments.

[Poyzinous]

Check this forum.http://forums.g35club.org/zerothread?id=407400

As long as you use a major brand 5w-30 you'll be OK. Mobil 1, Quaker state Q, Royal purple, amzoil synthetic, they are all good.find a full synthetic from a major brand and thats all.

[tollboothwilley]

Esther oil is recommended in the G37. Having said that, I think that you will get about the same benefits with Royal Purple.

I use RP in my engine and in my differential.

[Poyzinous]

I did not notice you had a G37. USE ESTER OIL. Nissan part number 999MP-5W30EP

[joe603]

Joe, did you notice all of the differences that our banned friend did??? I was always a little unsure of some of those super positive comments.

I used RP from day 1...but I had a late-model ('97) firebird that did feel much better with RP. I was hooked from that day forward.

The Nissan "ester oil" is not a synthetic oil, but a conventional oil with synthetic properties. Just stick with a good synthetic and you'll be fine.

[Poyzinous]

conventional oil with synthetic properties? are you comparing ester oil to mobil 1? where'd you get that info?

[pfarmer]

conventional oil with synthetic properties? are you comparing ester oil to mobil 1? where'd you get that info?

I thought it was oil with real properties.

I am curious however about the ester oil since most ester fluids I have been associated with were synthetic.

Perry

[Poyzinous]

my engineering consultant told me ester was synthetically made oil, of course using conventional oil, but an ester infused refinement process of which the new VQ series motor was designed upon.

[pfarmer]

my engineering consultant told me ester was synthetically made oil, of course using conventional oil, but an ester infused refinement process of which the new VQ series motor was designed upon.

From what I read it appears the threshhold for Synthetics is something like 30%. That is if the Nissan oil was greater than 30% synthetic than it would not be considered only dino oil. So whatever the type of esters are being used, it is not in enough of a mix to bring it into the blend area although it may well not have to to exceed the benefits of most full synthetics.

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From Mobile 1 products page:

Question:

What is Ester Oil? What is ester oil and how is it different than conventional oil? -- Randy Drier, Atlanta, GA Answer:

Ester oil is synthetic base oil that has been chemically synthesized. Typically ester oils are used in passenger car air conditioning compressors, refrigerators, and other industrial applications. Esters are one of the classes of synthetics that have been used in Mobil 1 products as well. Esters are stable molecules, provide good solvency, and provide very good low temperature and high temperature performance in engine oils.

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I saw this largely in oil used for steam turbine hydraulics. It was used for two purposes. One is that the fluid could obtain a temperature in the same neighborhood as the control device. In the case of a steam turbine's throttle valves that can exceed 1000 degrees. The second part of this then is its flash point. If you had a leak you don't want it to catch fire. Gas turbines also use ester based as lubrication oil.

In any case what I find interesting is if the ester is similar to what is used in these situations then it has some interesting high temperature qualities while its benefits also are highly desirable in much lower temperature situations such as helping to minimize piston slap upon initial startup.

I haven't found out what types of esters are used in the Nissan branded product.

Perry

[joe603]

From an oil website:

Friction Modifiers: Often esters or partial esters, these additives are very polar, thus attaching to metal surfaces to improve lubricity. FMs are used to improve fuel economy, as opposed to reducing wear, and are additive to the effects of lower viscosity.

There are many types of synthetic base oils, the most common being Polyalphaolefins (PAOs), Esters, Alkylated Naphthenes (ANs), and more recently Group IIIs. These different types of synthetic base oils are often blended together (or even with mineral oils), to give the balance of properties desired. All offer improved performance, but at a higher price, which brings up the question of value - how much performance to you need, and how much should you pay for it?

http://bobistheoilguy.com/inde...id=78

The oil Infiniti uses is not ester based...it has ester additives. The bottle says this:

5W30 oilSM rated.non-synthetic, with ester additive.Recommend for use in specific applications where Ester oil is recommended.

Here is a PDF that explains the different oil groups: http://shogunoil.com/Shogun_leaflet.pdf