Yeah, I'm gonna send them my Ester Oil from my first change too. Too bad I didn't have anything to seal up a sampe of the first fill of factory oil though.

Hmm....I drained my factory fill into a brand new oil pan. I should send in a sample.

I still have mine sitting in an oil pan right now too (a well-used one though), mostly because I've been lazy about bottling it and getting it to a recycle place. I don't think oil that's been sitting in a pan for a while can be trusted for analysis though, it's had time for things to "settle out" before you scoop the sample, and it's been oxidizing and absorbing moisture from the air while it sits there too. Hence the oil analysis places always saying to seal up a sample of well-mixed hot oil immediately on drain.

Good point. Well thx for saving me some money then! :tup:

i have just gotten a Z for about 6-7 months now.. and this is my second oil change... and i went to the dealership and told me if i wanted to Use this oil that they recommend only putting for 370z and maximas... and of course i said yes guessing must be good which i want to take care of my car... and charged me 94$ is this a reasonable price for an oilchange for every 3 months?? just curious...

and why are you changing oil every 3months?

cuz on the due date is 3 months from the date i change my oil and 4k miles..... thats why i was wondering. dealership sending me notice saying **** is due and crap lol

and my oil and filter notice turns on in my car....

you can change the interval notice by going into the menu. as far as changing at 4k I would think about switching to a synthetic like RP with a good filter like the RP synthetic and you could run 5k easily. It is really easy to change your own oil and it also ensures it is done correctly. I have heard horror stories about dealerships/oil change places using the incorrect oil or not changing the filter just to make the job go faster and save on overhead. It takes all of 15 min to change it yourself. Check the DIY section for what you need and pics of the change. And dont think I am a RP fan or sales man, i have just started using it for the past 10k and have been having good results with it first time with their filters but I plan to cut it open upon the next change.

Even if you don't change your own oil, I wouldn't worry about time as much as mileage (unless you let the car sit a long time).

I personally think the Esther oil is worthwhile, but I'm used to paying a lot for car maintenance ;)

Just so you know the Motul 300V is excellent stuff but is for racing only as it has no cleaning ability, although it will last better under race conditions than other oils. you will need to change it out VERY soon as to how soon, contact Motul and ask.

Where can I get Royal Purple or Motul 5w30? I dont see it on the websites of normal local stores like Pep Boys or O'Reily.

I just changed my oil at 2k miles from the OE to AMSoil 0w-30 SSO and the engine runs noticeably smoother than before... my Fiancee as well as my roomate also commented the same thing. I changed the oil in her MS3 to the same and her engine is MUCH smoother and the mileage is already much better on this tank. AMSoil is all I have used in my last 4 cars though so I am biased... it's just better oil IMO.

I always caution anyone who uses Royal Purple... I had heard a few engine builders (Evo motors) say they tore some engines down that were using it and that the oil was completely shot and not protecting the engine. It supposedly breaks down very quickly... but then again everyone will say something different and it might be fine.

Hey everyone,

Im doing my second oild change at the dealership, and Im taking my own oil since Im pretty sure they used regular cheap oil on the first oil change (the oil temperatures, right off the oil change, were about 10°F higher, for starters). Currently there are some specials on PepBoys on Penzoil Ultra Premium Synthetic Oil. Anyone know if this oil is good? Or should I keep looking for the much talked about Mobil One (I havent seen it in stores here in PR)?

Thanks in advance!

Penzoil Ultra Premium Synthetic Oil is fine. Go ahead and fill 'er up.

My car has about 9K miles on it. Is it okay to use Mobil One Synthetic Oil 5w 30 and mobil One Filter? Should i take it to nissan dealer ship to change it and bring my own oil?

schock you can do it yourself, i've got 20k and no problems yet. Just keep your receipts and date them with mileage so that if there is any warranty problems they can look at that for verification.

i just read though all 10 pages of this thread and not one person mentioned red line, is there any reason for this? i am about to change my oil and i was going to use red line for it.

Redline oil is fine. Go ahead and fill 'er up. :tiphat:

i already bought 12 quarts for $130 so i intend to :)

you only needed to buy 10 :D

Is it possible to use 5w20 in the motor? Why would we use such a thick oil on a roller motor?

That's how they get you! Selling in boxes of 12 so you need to keep buying their brand :roflpuke2:

:tup: Red Line is good stuff. Ester based as well.

Because of the high bearing temps.

And actually, if you read between the lines in the Service Manual, probably the most-ideal oil weight for this engine is 10w30. In the "For North America" section they claim 5w30 is the only option, but in the "Outside North America" section they say, exactly:

Probably the reason for the difference is US standards on fuel economy and/or emissions. Either way the difference between 5w30 and 10w30 isn't much.

Great info, did not know that :tup:

Both the 5w and the 10w won't make too much difference in most places, however, there are large parts of America that get much colder than both Japan and northern europe, including England.

That's the reason for the 5w, the 30 is what changes anything under normal running temperature.

I wonder if in nominal temperature areas, a synthetic (more free flowing at the same temperature and same 'weight' than conventional oil) oil at 10w instead of 5w, would sit on the top of the engine longer, aiding cold starts?

I thought about that, but then again "North America" covers the southern tip of the continent too. Scandinavia might be slightly warmer than, say, Greenland or Northern Canada, but I imagine it's pretty comparable to all but the most extreme cold areas of the US.

Not sure what you're saying there, but as far as covering southern NA, it's a one size fits all statement.

Well, what I mean is: if it was really about weather, they could have subdivided things differently. North America = colder doesn't seem like a logical way to break things up given that only a small portion of North America's population is in a colder climate that parts of Europe. If this were all about temps, they could have lumped everyone in the non-NA category and told them to use the handy chart listed there (which says the 5W-X's go to somewhere below -22F, and the 10W-X's are good down to -4F).

So, we're thinking the explanation is, what?

Fuel economy / Emissions standards is my guess, but who knows?

Hmm, maybe on cold starts i guess?

I'm pretty certain it's 10w30 in England, like most stuff there, it was 10w40, but seems to h ave moved to the 30 in recent years. However, i know that typically the winters don't get as cold there, even compared to oregon.

Not on track with the last few comments, but it is about oil :-)
Just Changed my oil at just over 5k miles. Have only used Nissan Ester on the last change at 1850 miles. I went with a K&N filter, a filter mag, magnetic drain plug and Penzoil Ultra. I only have about 30 miles on the new oil, but I am very pleased. Engine is quiter, smoother, and feels a bit stronger. The stronger may just be because its smoother, so it catches me off gaurd. Anyhow, overall, I am very pleased with the Penzoil Ultra (no esters).