Thread: No Full Synthetic Oil in the Z?
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Old 11-10-2009, 06:00 PM   #42 (permalink)
kannibul
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Originally Posted by zman1910 View Post
A lot of you guys are new to the VQ engines so I'll just say this and let you arrive at your own conclusions.

The reason Nissan people are pushing use of conventional ester oils is bc a lot of their research from the 350Z has led them to believe that early use of synthetic oils are directly responsible for all the oil burning issues they have seen with the VQ. And trust me there are a lot. Anyone that has owned a 350 knows this. Personally, I have owned 2 350's and a G35 coupe. Never once did I use synthetic oils on my N/A Z's. Once turbo'd I immediately made the switch but I also had about 15k on the odo at the time...so I'm sure the piston rings were seated by then. Most good mechanics recommend switching to synthetics around 20k miles for this exact reason.

The VQ is a strange engine so take what you want from this post. There are plenty of threads on "my350Z" to prove this.... specifically of people using royal purple.

The dealer may not be completey bs'ing you on this one. Remember they are in it for the money also so they'd most probably prefer you to get synthetic. Just food for thought.

It sounds as if the guy was trying to honest by saying Nissan engineered the engine that way. It sounds ridiculous but that's probably what Nissan told him to say, so you can't fault him. I have a habit of running conventional oils in my vehicles unless I have some source of FI. People have been using dino oils for a long time now and they are better than ever so I see no reason to change....yet.
Well if mine ends up burning oil from it, then so be it - to be honest, I'm skeptical that it will due to the use of synthetic oil, or that it (the use of synthetic) could be proven as the culprit of burning oil.

Many vehicles come with synthetic from the factory. Nissan won't say either way if their factory fill is which or if it's even a blend, so with all honesty, how are we supposed to know if using synthetic is "bad" for the engine? Plus, there's a lot of debating information all over the place (internet) regarding when to switch to synthetic, etc.

I'll use what I use (Mobil1) until something comes up that convinces me otherwise.
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