Gt-R oil vs Z oil
 

When purchasing my car my friend; who also owns a Z, told me to ask the dealership to put in the Gt-R oil instead of the z oil for the 15000 tune-up. I wasn't paying for the tune-up the previous owner was, so I told him I would pay the difference between the two oils. My car is now running the Gt-R. Ok, it's doesn't have any advantage for me and was a waste of money, but is it causing harm?

GTr runs Mobile 1 from my understanding.

It does but is it ok in the z?

I would bet $100 they didn't put "GT-R Oil" into your Z. The GT-R's use 0W-40 M1 that can be bought at any parts store and charged your more for it. It won't do anything to your Z, some people even run that weight.

I would suggest rather than paying more for something just because your friend suggests it you consult your owners manual/search here and make an informed decision for yourself

How much extra was this oil?

I don't know how much it cost cause I paid for a couple other things. Besides value for money which apparently doesn't make it worth it, is mobile 1 better for our z's. If price wasn't an issue what would you use?

Genrally, any synthetic oil is 'better' for your Z as long as it's API approved.

Ummm....the 'GT-R' oil/Mobile 1 is actually less than the Nissan Ester Oil that they recommend for the Z. Just make sure you have the correct grade and stick to one brand/type of oil. Most people here go with Redline, Amsoil, Mobile 1 or Nissan Ester Oil.

All oils have the api rating on them. There is a standard for all countries called ISLAC and the oil that Nissan uses for the Z is a ISLAC GF-6. The Mobil1 that we all get off of the shelves is ISLAC GF-5 because it does not contain ester. Ester is a additive to the oil that helps limit the audio noise that comes from the valves clattering. While not using an ester based oil does not damage you car it just gives off the sound of your valvetrain. From what I was told by the service manager who is very knowledgeable about the Nissan oil, he stated that the Nissan oil is infact purchased from Mobil1 but they add ester to it and also put their name on the white bottles. Hope this helps you out.

The GTR oil is Mobil 1 0W-40. It will not cause harm. It should be cheaper than Nissan Ester Oil (the recommended oil for the 370Z). It will not cause any problems. It will make valve noise slightly louder, which isn't an issue.

Which will prematurely wear out components in the valve train.

My God.... another oil thread.

which has not been proven

I know, it's the most commonly non-searched topic on this forum

I really haven't too many people, or anybody really using Valvoline synthetic oil. I have used the Valvoline blended oil in my G37 & my dad puts this oil in his Nissan Frontier & my moms Acura MDX & we have not had any problems with it. Seems that the Valvoline synthetic oil is not as popular as the one sin bold up-above.

Despite the MASSIVE amount of oil threads I have yet to read one "my engine lost compression or blew altogether because of my oil choice" thread. I have also failed to read a "my oil choice added 10hp and 100k miles to my engine life".

I think it is safe to say by now that any quality 5w30 oil is going to be just fine, although I am not the first and certainly will not be the last person to suggest this.

Great... Another "I know better than everyone else because the dealership told me so" guy... :shakes head:

The owners manual recommends ester oil over regular synthetic. Its oil, how do you think it helps quiet the valve-train, by putting ear-muffs on it? No, by doing a better job than conventional oil's.

You wont hurt your car by using regular synthetics but the higher tier formulas like Redline are what is recommended. Why would you use something else... To save $15.00. That's the same line of thinking on why I only use 87 or 89 octane when the manual says 91 or higher... Saving $2.85 a fill up to spend on that dollar menu. Buy a Prius if you want to play that game, if you buy a sports car then treat it as such!

This is what everyone should know!

You guys are speaking way above my head. Why do some people chose Mobil 1 0w40 for their Z's? What is the difference between Mobil 1 0w40 vs Mobil 1 5w30? Only the cold start issue or does the 0w40 have no esters in it while the 5w30 does. If the 5w30 has to esters quiet the valve train than it should be used, no? Unless there is a big advantage to the 0w40. No one has addressed this yet. you guys are just arguing. Is it all about the esters?

Google oil viscosity.

Thanks. But I googled it already and I understand the way it is measured. That doesn't answer what the difference between the 0w40 and the 5w30 is besides cold start and high temp ratings. Does the latter have esters and the former not. That is not explained when reading about viscosity. If the former causes valve chatter in the z it doesn't also do the same in the GT-R?
One wouldn't recommend Pirelli tires for a Prius because there is no benefit equal to the extra paid for the tire but I am sure that the Pirelli is a better tire than the stock. Perhaps Nissan recommends the 5w30 for the Z because there is no real need for the 0w. The question again is what is the better oil?

For what it's worth, the Mobil 0w-40 synthetic is a full synthetic while the 5w-30 has a natural petroleum base (even though in the states it's still considered a "full synthetic", in Japan it is not).

Just throwing another stick into the fire.

read your owners manual

Simple answer go with Nissan Ester and call it a day. Stick to the 5w30 if that's what it says in your manual. The recommended oil varies depending on your climate and the type of driving. The difference is mostly in the brand as far as what goes into the oil. If you really want to know if it's working as it should, have Blackstone labs test it to compare.


If you feel like getting confused even more, here's a comparo of some brands as it relates to wear. Just remember that all oils eventually do break down and this is just to demonstrate the extremes.

http://www.animegame.com/cars/Oil%20Tests.pdf

:iagree:

Really ? !


:bowrofl:

I have used both mobil 1 5w-30 and redline 5w-30. In both cases my car burt oil and had the valve noise deal. I now use Castrol non synthetic 10w-30 (like in all my cars, and work fleet). No more burning oil or valve noise. The cars revs extremely smooth. Im just not sold on all this oil debating. To me I have found something that works so im keeping with it.

Which is what many people do. Mobil 1 doesn't use an ester base, period. I have heard of and read of differences between the 5W-30 and the 0W-40. Nothing has confirmed either definitively, which will also never happen seeing as oil additives and things are trade secrets.

Generally, less valvetrain noise should be better, at least from an audible perspective. I haven't read anything about how the valvetrain noise apparently indicates premature valvetrain wear (as implicitly indicated).

If the mechanic at the shop did as he was told to, he put in what the GT-R would take for oil changes: 0W-40 Mobil 1. The weight has little bearing on how it performs (well actually that is even more complicated, but irrelevant in this case).

When looking at Mobil 1's 5W30 and 0W40, there is no real difference. Solve this problem by doing what was suggested earlier. Run Nissan's suggested oil for the Z; Nissan's Ester Oil, 5W30. End of story. Now let us close this oil thread so that it may sit among the other hundreds of oil threads that never reach any definitive answer.

Happy driving.

I guess Mobil disagrees with you. Just sayin'.

Is Mobil 1 an Ester Oil

Research told me that most all synthetics have some amount of ester additive; the thing that separates a group 5 oil like Redline from everyone else is the percentage of ester that the oil is...

Of course I just did this research now so I dunno, oil threads.

Here's a good image, despite being over a decade old.

http://www.e90post.com/forums/attach...1&d=1176244244

There is however a difference from what I have been reading. The difference being that the only 100% fully synthetic oil that mobil 1 has is the 0w40. Besides that my dealership doesn't use 5w30 for the Z's but 5w40.

Now, I noticed your location is Israel; if you really are there, I'm not surprised your dealership is using a thicker oil due to the hotter temperatures there. Otherwise, there really isn't a good reason... people in California run 5W30... it's not a big deal.

So is the 5w40 also nissan ester oil or only the 5w30?

Nissan Ester Oil comes in a single weight, 5W30, as it was made specifically for the 370Z.

Purist, I know I am nagging but I talked to the dealership and the oil they use for the 370z is made by Nissan. They also use it on all their infinities. I'll get a pic of the bottle soon and post. It says 5w40, API SM/CF, and ACEA-A3/B4. The mobil 1 says API SM (no CF), ACEA-A3/B3 and ACEA-A3/B3. Now that you know where I live would you still recommend the 5w40 over the 0w40? The dealership claims the oil is from Nissan. Perhaps because of the different weight it is not easer based? What are your thoughts?

Pics of bottle

Based upon this image, this is still not the Nissan Ester Oil of which we speak.

https://www.mynismo.com/images_products/7589.jpg

This is what you're looking for. As far as I know, this particular oil doesn't actually come in the form of a 5L/5Qt jug, even for OEM use.

Purist, your picture isn't posted up properly. If I can't get the oil you speak of which would be better, the Mobil 1 0w40 or the Nissan 5w40 non ester? Try again the pic. Thanks

Shamrock, you're way too hung up on oil selection. Which type of oil is best is way, way, overstated in oil discussions. Use the oil recommended in your owner's manual and you can't go wrong, full stop. Guess who specified that oil? The guy who knows better than any forum discussion oil guru's - a Nissan engineer! There is no best oil because other than synthetic is better than dino but you pay a premium. Both oils will lubricate your engine without issue. It all comes down to personal preference. If you feel better having your maintenance performed by a Nissan dealer, then take their advice on oil selection. Now, quit worrying about oil and go enjoy your car.:driving:

Ultimately, he's right. Go with what is recommended. I can see the image just fine, so I don't know how else to show you.

I can only get here Nissan 5w40 which has no esters or Mobil 1 0w40. Which should I use? I thought the while point in Nissan oil was the esters.