jarborn1

iTrader: (5)

Yay, Nay???

Also, was planning on changing the oil at the end of the break in period (1200) miles...

Is it safe to switch to synthetic then or is synthetic something that should be used down the line..

Retromoe

iTrader: (4)

Just use Mobil 1 full synthetic.

jarborn1

iTrader: (5)

So then it is safe to switch to synthetic at 1200 miles, and it isnt something that i should wait to do??

Or are you just advertising for Mobile 1

Heat

iTrader: (1)

IMO it is too early. I would at least wait until you hit 15k. I waited until 20k just because I was advised that Jap cars arent fully broken-in until around 30k. I did a hard break-in too.

However, in light of this "ticking" sound that are coming from some engines, it might be a good idea to start on a synthetic early to prevent problems later on. (I have not had a ticking noise at all).

Achilles

Seems too early but to each their own. Use full synthetic FTW!

jarborn1

iTrader: (5)

I wasnt asking about personal preference.
Is it SAFE for the engine, will it BENEFIT the engine or cause HARM...
When should you typically switch, when is too early..

todd92

There is no too early. Switch whenever you want to. Many cars come with synthetic as the initial fill. Synthetic oil does not delay or prevent engine break-in. Also, no need to change at 1200 miles, just wait until the normal 3750 mile interval. Then change every 7500 miles thereafter.

jarborn1

iTrader: (5)

Nice, thanks Todd

Heat

iTrader: (1)

Actually, you are asking based on personal preference cause no one has done any testing of the G37's based on when you switch to synthetic. The manual states that you should only use 5w-30 and they recommend the use of the Nissan Ester oil which is a conventional oil with ester additives.

Same controversy exists for hard break-in vs recommended break-in. Research exists but it is still ones personal decision.

If you are looking for someone to tell you what you should do than you wont find it. No one wants to be responsible for the damages that might be caused to your car or voiding your warranty. We can only give advise but can not make you do anything.

I strongly recommend that you wait until at least 5k at the earliest to switch to a full synthetic (ester based). I am not a oil guru but I do know that conventional oil picks up debris better than synthetic. However, synthetic lubricates 10x better and prevents wear. Since your engine is still adjusting and breaking in the metal parts, even after the initial 1200 miles, that it would be wise to keep conventional until you feel that your car is ready.

jarborn1

iTrader: (5)

Not sure where you got "personal preference" out of that question, i was looking for people knowledgeable on the subject, hence i used the word "SAFE" and not "DID YOU" add synthetic..

But appreciate your input, makes a lot of sense..TY

Timbaland

You change oil every 7500 miles after the initial one at 3750? Whats recommended. I read through the manual and noticed all those maintenance guides said change oil every 3750 miles or so. I thought that'd be way too early and was planning on changing it every 6000 or so.

jarborn1

iTrader: (5)

Timberland...You my friend are livin on the edge !!

Timbaland

Haha. I guess I will change it sooner then, maybe at like 4500 to 5000 miles. Thanks.

todd92

Manual says 7500 miles...

js3350z

I'm in the same boat, wondering when to switch to full synthetic...

and I don't know how you guys have such a long interval for your oil changes, I don't plan to go much further then 3,000 miles per oil change