redundant thread, I know: Synthetic for my first oil change?

[neek21]

going in for my first oil change [3750] and was wondering what the consensus was, synthetic or regular oil for my first [and subsequent] oil changes...thanks for the help folks!!!

[soul_hfk]

in my other G i changed to synthetic on her 1st oil change the new 1 i forgot to say to put the synthetic in so ill make the change the next time. but yea i would change it over for your first

[joe603]

I did synthetic on the second oil change...but that was at 3k miles. I say do it!

[telcoman]

going in for my first oil change [3750] and was wondering what the consensus was, synthetic or regular oil for my first [and subsequent] oil changes...thanks for the help folks!!!

I think it is a waste of money

Telcoman

[kmckis1029]

i changed immediately.

[EZcheese15]

I changed to synthetic at the first oil change, at 3750. Car has been tracked multiple times and currently has 59k miles on it. Runs as good as new. I say go for it.

[SVTCOBRA]

Local Infiniti service dept. told me to change it at the first change (this was my new 05 Sedan). Do it!!

[neek21]

called the dealership, talked to the service department and got an appointment for Saturday morning....when i told the manager i wanted to put synthetic in [first oil change, 3750], he tried to talk me out of it, said the "seals hadnt set in yet", or something like that..he wanted to put regular, or the same type of oil that came with it from the factory...he then said I could bring whatever oil i wanted and they would put it in for me, as well [ what gives??]....any ideas folks??

[EZcheese15]

called the dealership, talked to the service department and got an appointment for Saturday morning....when i told the manager i wanted to put synthetic in [first oil change, 3750], he tried to talk me out of it, said the "seals hadnt set in yet", or something like that..he wanted to put regular, or the same type of oil that came with it from the factory...he then said I could bring whatever oil i wanted and they would put it in for me, as well [ what gives??]....any ideas folks??

That has some truth to it, but typically that is what the "break-in" period is for...usually the first 1000 miles. If you wait until 3750 miles for your first oil change, the rings should well be sealed by then.

[loystock]

I change oil on the first 1000 miles with 'dino' oil, then synthetic from 3000 miles onwards.

[RED_DET]

Synthetic, AMSOIL at that.

[Amays U G37S]

Ya you have to run synthetic in these motors because they are not designed to be ran with conventional. These motors are built in an air tight, white suit, closed off room. Not in the middle of the open assembly line.

Stick with synthetic, trust me.

[neek21]

Plan on putting Pennzoil Platinum in...let the arguments begin!!! [lol]

[EZcheese15]

Ya you have to run synthetic in these motors because they are not designed to be ran with conventional. These motors are built in an air tight, white suit, closed off room. Not in the middle of the open assembly line.

Stick with synthetic, trust me.

That's not true. Obviously, synthetic is recommended, but it's not required. Take a look at your owner's manual. It makes no mention of synthetic oil.

If it was required (like it is in the GTR), it would say so on the oil filler cap and also in the owner's manual.

[cbak999g35]

Right...recommended but not required. Compare it to premium vs. regular gasoline. All in all, it's about $13 per oil change and under normal driving conditions, that's about $40 a year, to do synthetic changes (if you change your own oil). I can afford that. I get Mobil 1 at Wal-Mart for $23/5 qt jug. I'm not a Wal-mart fan, but it's cheap.

[EZcheese15]

Right...recommended but not required. Compare it to premium vs. regular gasoline. All in all, it's about $13 per oil change and under normal driving conditions, that's about $40 a year, to do synthetic changes (if you change your own oil). I can afford that. I get Mobil 1 at Wal-Mart for $23/5 qt jug. I'm not a Wal-mart fan, but it's cheap.

Actually, regarding fuel, depending on the year of your vehicle, premium *is* required. It says "Premium Unleaded Only" on the filler door and also says minimum 91 octane in the owner's manual. It will run on lower octane, but can cause damage to the engine if you run it all the time. But that's a whole different subject...

And I wouldn't make the comparison to fuel anyway. Premium fuel, when not required, is a complete waste of money. It has nothing to do with the quality of the fuel, but rather the latency to ignite. The difference in oil between synthetic and natural (or "dino") oil is quality related. Polymers in synthetic oils are designed to not break down as easily, which means it's longer lasting and better protection against metal parts wearing. Which is also why it's harder to seat new rings with synthetic oil, because it doesn't allow much wear (which is needed to seat rings). But going back to the original subject, rings should be well seated by 3750 miles, so there shouldn't be an issue. If you were changing oils at 1000 miles on the engine, you'd be better off waiting before the switch to synthetic.

[Amays U G37S]

It doesn't recommend using 91... I use 89 anyways

our pumps are 87 89 91

I unno what your pumps are

But i run seaform every 4 gas tanks. I have a problem with this crappy 89 i bought somewhere forget where

ugh!

[EZcheese15]

It doesn't recommend using 91... I use 89 anyways

our pumps are 87 89 91

I unno what your pumps are

But i run seaform every 4 gas tanks. I have a problem with this crappy 89 i bought somewhere forget where

ugh!

You should take a look at your manual again. For 2008, it recommends 91 for the sedan, but states it as a requirement for the coupe. In fact, here is exactly what it says:

VQ35HR engine
INFINITI recommends the use of unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-Knock Index) number (Research octane number 96).
If unleaded premium gasoline is not available, you may use regular gasoline with an octane rating of at least 87 AKI number (Research octane number 91), but you may notice a decrease in performance.

VQ37VHR engine
Use unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-Knock Index) number (Research octane number 96).
If premium gasoline is not available, unleaded regular gasoline with an octane rating of 87 AKI number (Research octane number 91) may be temporarily used, but only under the following precautions: