No Full Synthetic Oil in the Z?

davidyan · 11-14-2009, 03:31 AM

Quote:

Originally Posted by ZKindaGuy

So what's the final word to the first posting....is it OK or ISN'T IT OK to put synthetic in these cars......Geezzzuss - Just a simple YES or NO will do!!!!!!!

Yes.

The only cars in which synthetics are not recommended are rotary engines or some very old engines. The debate on synthetics otherwise revolves around the following:

1. When to switch and if it affects break-in. See previous posts
2. Whether or not synthetics provide much more protection than conventional and over what change interval.

So the issue is not whether it can or can't. Just if its worthwhile. ZKindaGuy, I think your service manager just didn't take the time to elaborate in his recommendation to you when he stated that the Z can't use synthetics. There is nothing in the design of the Z's engine which would preclude the use of synthetics. There are however factors which indicate it could help including:

1. Higher than average oil temps. Synthetics shear less and hold better in hot and cold.
2. High RPM engine combined with the fact that Z owners typically drive hard.
3. the VVEL system uses oil pressure. Using synthetics results in more stable viscosities and thus more consistent oil pressure as compared to conventional all else equal.

Its up to you- but again the Ester oil they recommend while not a "full synthetic" due to its conventional base oil does have more esters (an additive found in synthetics) than most synthetics on the market (except for Redline, Motul, etc.)

Philipp · 11-15-2009, 09:06 PM

Quote:

Originally Posted by davidyan

Yes.

The only cars in which synthetics are not recommended are rotary engines or some very old engines.

Sorry, but this isn't true... I had 2 Rx8 in the last 4 years whom both ran on Grade V synthetic oil (Royal Purple) without any kind of issues. However, rotary engine (and their ?&*" catalytic systems) canno't burn all types of synthetic oil (ex. Mobil 1 isnt made for rotarys due to additives)....

j.arnaldo · 11-14-2009, 08:46 AM

YES, it is O.K.--no, it's GREAT!--to use synthetic oil in our beaZts!!! End of story.

Trips · 11-14-2009, 11:34 AM

Trips · 11-14-2009, 12:23 PM

is the dueling over?

Modshack · 11-14-2009, 12:28 PM

Quote:

Originally Posted by Triple's

is the dueling over?

...I doubt it...You know all about the "assume" thing....

Trips · 11-14-2009, 12:44 PM

these types of topics, are always going to have controversy and in the end what's the answer? that depends who your listening to....it's like asking what's the best car under 50k? right!

Trips · 11-14-2009, 12:51 PM

with Steve's Proof! can we call it a day?

Modshack · 11-14-2009, 01:00 PM

Quote:

Originally Posted by Triple's

with Steve's Proof! can we call it a day?

Nope...Says nothing about the current factory fill. The TSB was to solve an early problem, since rectified. The controversy continues!

370Zsteve · 11-14-2009, 01:03 PM

Quote:

Originally Posted by Modshack

Nope...Says nothing about the current factory fill. The TSB was to solve an early problem, since rectified. The controversy continues!

Wow. OK, we'll agree to disagree. Nissan developed it's own oil specifically for this engine, but they don't use it. Sounds reasonable.

"The oil was developed to complement Nissan's Hydrogen free DLC coating used on the cam followers in the QR25DE engine, the VQ35HR and the VQ37VHR engines."

370Zsteve · 11-14-2009, 01:01 PM

Quote:

Originally Posted by Triple's

with Steve's Proof! can we call it a day?

I doubt it, Trip. You know all about the "assume" thing

kannibul · 11-14-2009, 01:03 PM

OK everyone, lets stop arguing, 370zSteve is totally and 100% correct.

Lets all make a future effort to never disagree with 370zSteve, as he's proven us all wrong, and while our facts and opinions may be correct in the real world, on the internet, 370zSteve is king, and makes all the rules, and is never, NEVER, NEVER wrong.

-----------

As for the requirement Nissan includes in the ECU Reprogramming bulletin - perhaps it's so that Nissan can't fault the tech for incorectly flashing the ECU. It has nothing to do with the ECU, it has everything to do with Nissan covering all the bases, as they tend to do, to ensure that things are done very specifically and in a very controlled way. Nissan has tested their proceedure by having the engine loaded with thier brand of oil. Not hard to imagine. They make it a requirement because that's what they know is in the engine in the conditions that they tested with, and know that to produce successful results.

Now, the real question for the bulletin is this - why reprogram/flash the ECU to correct the VVEL system making a tapping noise....not why did they use Nissan brand oil...

370Zsteve · 11-14-2009, 01:07 PM

Quote:

Originally Posted by kannibul

OK everyone, lets stop arguing, 370zSteve is totally and 100% correct.

Lets all make a future effort to never disagree with 370zSteve, as he's proven us all wrong, and while our facts and opinions may be correct in the real world, on the internet, 370zSteve is king, and makes all the rules, and is never, NEVER, NEVER wrong.

And the trolls surface out of the slime..............I guess that's what I get for posting the info, as requested. Now back to our regular programming.

Trips · 11-14-2009, 01:08 PM

Quote:

Originally Posted by 370Zsteve

And the trolls surface out of the slime..............I guess that's what I get for posting the info, as requested. Now back to our regular programming.

kannibul · 11-14-2009, 01:08 PM

Quote:

Originally Posted by 370Zsteve

And the trolls surface out of the slime..............I guess that's what I get for posting the info, as requested. Now back to our regular programming.

Sorry, not a troll, perhaps you're new to the internet?

11-14-2009, 11:34 AM	#4 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	__________________

11-14-2009, 12:23 PM	#5 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	is the dueling over? __________________

11-14-2009, 12:44 PM	#7 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	these types of topics, are always going to have controversy and in the end what's the answer? that depends who your listening to....it's like asking what's the best car under 50k? right! __________________

11-14-2009, 12:51 PM	#8 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	with Steve's Proof! can we call it a day? __________________

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11-14-2009, 08:46 AM	#3 (permalink)
j.arnaldo Banned Join Date: Oct 2009 Location: Puerto Rico Posts: 937 Drives: Nissan 350Z, 2004 Rep Power: 0	YES, it is O.K.--no, it's GREAT!--to use synthetic oil in our beaZts!!! End of story.

11-14-2009, 01:03 PM	#12 (permalink)
kannibul A True Z Fanatic Join Date: Jun 2009 Location: Jenks, OK Posts: 2,281 Drives: 370z Touring/Sport Rep Power: 268	OK everyone, lets stop arguing, 370zSteve is totally and 100% correct. Lets all make a future effort to never disagree with 370zSteve, as he's proven us all wrong, and while our facts and opinions may be correct in the real world, on the internet, 370zSteve is king, and makes all the rules, and is never, NEVER, NEVER wrong. ----------- As for the requirement Nissan includes in the ECU Reprogramming bulletin - perhaps it's so that Nissan can't fault the tech for incorectly flashing the ECU. It has nothing to do with the ECU, it has everything to do with Nissan covering all the bases, as they tend to do, to ensure that things are done very specifically and in a very controlled way. Nissan has tested their proceedure by having the engine loaded with thier brand of oil. Not hard to imagine. They make it a requirement because that's what they know is in the engine in the conditions that they tested with, and know that to produce successful results. Now, the real question for the bulletin is this - why reprogram/flash the ECU to correct the VVEL system making a tapping noise....not why did they use Nissan brand oil...