Sorry I took so long to respond gumpy but looks like you got your answer from rp themselves. And as fAr as the ticking I have redline and the car still ticks it's just the way the motor sounds. Any good quality oil will be fine redline.. Amsoil.. Mobil 1. I'm using redline right now. May try something else though

No worries...

still ticks huh??? poo...

Ok, I'll play! Red line here.

http://nonstoptuning.files.wordpress...pg?w=510&h=382

I've personally used both Royal Purple and Amsoil. I strongly believe that Amsoil is the best oil money can buy.

More info on Amsoil ... NST Is Your Houston Area AMSOIL Retailer! NonStopTuning

Please take a few minutes to check it out :tup::tup:

i use straight up Slick 50 :-O

I've been using Castrol Syntec 5w-30 for my Z the last two oil changes, UOA results look good so far. I switched to Castrol Syntec 0w-30 "German Castrol" on this last one, hopefully it's as good if not better than the last.

You are saying you lost power just by your butt dyno ? I just did a change with royal purple yesterday and the car feels as strong as ever..

anyone else feel the way danny does ?

Got hooked up with Motul 300v by a forum member, just waiting to get my GTM oil cooler order processed.

ENEOS 0W 50 and a MOBIL1 filter

Red Line seems to work well!

Yea that is what i'm saying, good ol butt dyno. That just goes for me personally, and i did not do any searching for what people were using before i switched to RP. I just assumed what worked for the vq35de would work for the vq37hr. Then i was told by a 350z guru (westpak@HPLogic) that guys who had reported switching to RP in the vq35hr were stating the same feeling of declined performance. I still continue to use RP motor and gear oil in my other Nissan though.:tiphat:

5W-30, 0W-30, 5W-20...

At my first oil change at the Nissan/BMW dealer, the Nissan service chief absolutely insisted that the Zs do not come to them with esther oil in 'em, just plain old Shell 5W-30.

Now, I have a case of RP 5W-20 left from my RX-8 days. But when I asked if it was OK to use 5W-20 synthetic in my Z, the other service chief (BMW this time) practically jumped out of his chair to say "no, don't do it, you need the 5-30 in that car."

I know some of the older hands here are sick of oil-talk, but there are many of us who are relatively new to the car. :stirthepot:

I changed my oil to 0w-30 Mobil 1 fully synthetic.. They say the only difference between 0w and 5w is the weight and that the 0w gives better gas mileage.. It's lighter so your pistons move up and down with less restriction...

I got Mobil 1 0w-30 and the Mobil 1 filter and OMG!!! I felt the difference from the start.. changing gears and accelerating feels soo much better!!!!!!

wow.. the power of synthetic oil.. soothes the soul.. :tiphat:

I use Red Line 5W-30 and K&N with filter magnet and magnetic drain plug.

about to get my first oil change
thinking about mobile 1 EP 10w30 with mobile 1 filter.

I did my 2nd oil change and I used Castrol edge with the napa gold oil filter.
I have noticed that the oil temps cool down faster than with the Nissan ester oil.

Hey guys, check this site out... maybe it'll help you decide... I thinking of going with royal purple after reading this

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

Ive been using redline but im going to give amsoil signature series a try.

Before reading this, i was satisfied RP oil. I am even more now!!!
ps. I just wonder if RP isn't a big publicity buyer in this magazine...:icon14:

It is an interesting read. But as they said in the conclusion it isn't 100% conclusive, the test they used is only 1 piece of the puzzle. Look forward to reading more about further tests they come up with.

Redline 5w-30 with Genuine Nissan
Redline Trans
Redline Diff

I wonder if the Red Line 10W40 would've performed better than the one tested...

Impressive results for Royal Purple 10W40...

...an eye opener...And to think that I gotta use up 4 more cases of Mobil 1 I bought last summer on sale! So, from now on it's R.P. or ester-based oils for my '04 Z!!! On the bright side, I'm 61, and NEVER push my baby too much, so I can keep 'er forever!

guys becareful about putting too much reliance on this test, from what i understand it only tests a very narrow spectrum of what an oil is suppose to do. I'm a RP user myself but may change, the UOA's show that RP's aren't always the best with our engines...

I agree with Gumpy.

The Timken test is not the end all be all of oil testing. This test is primarily run to determine the performance of extreme pressure additives found in an oil. Here is the ASTM link for the test: ASTM D2782 -02(2008) Standard Test Method for Measurement of Extreme-Pressure Properties of...

An oil is subject to so much more than what this test can prove. UOA's are one of the greatest, if not the greatest ways to verify the performance of an oil in your engine.

Actually i heard UOA's are limited as well as they only show dissolved metals and not the non-dissolved stuff...

Food for thought people, i asked my taxi driver how often they change the oil. They do it every 10k km with some cheap *** gulf western oil... their engines last over 800,000km... hmmm...

Never heard that before. The UOA's all measure the percentage of insoluble material (which is a measure of oil filtration). Otherwise, UOA's are the best way to determine how YOUR ENGINE is getting along with the oil you put in it.

My previous car was a 2007 Altima 3.5SE VQ35DE. I abused the crap out of that car and had it for 40,000 miles before trading. I have documented UOA's for nearly every oil change I performed on that car using Castrol Syntec 0W-30 (aka, German Castrol, aka, G.C.).

That is the ONLY oil I've used since the UOA's for the Altima were as perfect as you could ask for. Now the UOA's on the Z (of which there are only 2 so far) are still trending down on the wear metals, but look absolutely perfect considering miles and driving conditions.

The 0W-30 flows like a 0W oil at 32ºF. And basically, that's the only time you really care about the 0W. The only reason I use 0W is because the 0W-30 is a German engineered and produced oil. All other viscosities of Castrol Syntec are designed differently and aren't any better than Mobil1. The G.C. actually holds its viscosity better than nearly any other 30W oil at high temps, so that's all I have ever used and all I ever will use. Plus, it's not terribly expensive ($6.50/qt) and is accessible (available at all Autozones).

Late,
Trav

Dyno Tests For RP....................

Royal Purple Independent Videos

The way I see it all synthetics are the same.

If that were the case, then there wouldn't be 5 classifications of oils (group numbers).

Not sure how independent the tests are when they are on Royal Purple's website...

:iagree: hence all the discussion regarding oil


Having done my own research into Redline (and Motul for that matter) and their track record, I think that their oil is the best for the Z (ester additives along with being full synthetic). There are so many smoke and mirrors from each company, you almost need to find reasons NOT to buy them just to finally get to a decision. I get multiple conflicting things from all the different oils, but Redline seems to be the most straight forward IMO. They have been around for quite a while, they have more involvement in racing applications (from what I can tell), they are upfront about their base stocks, and people are having great success with them in this forum. I don't like the way Amsoil seems to sell their product, and the information out there regarding Royal Purple seems to be hit or miss (not to mention Mobil 1 and all those... I hate the company wars and will cause me to buy neither product i.e.- Mobil 1 vs Amsoil, AT&t vs Verizon). The link I posted does seem interesting for Royal Purple, but I think I've finally decided Redline is what will give me the protection and piece of mind I want for my Z.

I think I'm the only one on the forum with Agip full synthetic in my Z.

I'm going to be switching over to Motul 300V 5W30 once I hit my first oil change. They use an Ester formula rather than an Ester base like most other synthetics. There's an interest

I had some old stock that I sold off thinking I was going to use Redline.

The only synethic oil that Ive ever used was Mobil 1 5W30.... and in other cars Ive always used a Fram Oil Filter (Which I will prolly get crap for). But in my current car (Which only uses a cartridge and not a filter) I just use the OEM Mazda cartridge since I have a Mazdaspeed 3 currently.

I thought it was the other way round... motul is group 5 and uses ester base stocks and the others are group 4 with esters added...

Never-the-less i think i'm going motul next... I'm not gettin the warm and fuzzing feeling from RP after looking at all the UOA's on BITOG forums...

Unless you use a very specialised place i'm pretty sure they're using a type of spectrum analysis on the oil... and from what i understand that only gets you the dissolved stuff in the oil. They do they don't centrifuge the oil and seperate all the stuff out. BITOG has more on this.

In saying that it's probably the best method of testing, but just know it's also limited...

GC is probably one of the best but i know my dealership will void my warranty for using something different to 5w30... they are so lame... i hate them...

The thread question is which oil do I prefer? I prefer what the people who build the car prefer. They recommend Ester.

There are a fair few people with the same thoughts as you...

the thing is most of the people on forums like theses are hardly the type to listen to Nissan.

Secondly i'd like to point out a technicallity, the question was which SYNTHETIC is prefered, the nissan ester oil is a blend.

Hmmm, I sense being drawn into the oil definition vortex. Didn't really want to go there.
Dino, synthetic, blend, conventional, are all marketing derived terms, not scientific.

"Synthetic" is a marketing term and that it is the responsibility of the Marketer (the one who labels and markets the oil) to define what it is.

Please realize that Ester is a generic term, there are literally thousands of different ester formulas. The ester formula Nissan uses is patented and AFAIK no body else is using it, and nor would it make sense to at this point.