What is the best synthetic oil?

WarmAndSCSI

Yep, you were fine to go synthetic after that first 3750. I saw 1/3 quart consumption (maybe) over the first 2000 miles on our Z; we switched to the Castrol 0W-30 at 2100. I'll report back with a UOA and oil consumption report at roughly 6000 miles.

I do have to note, however, that the 0W-30 (which is indeed a thick oil) still gets us 30+ mpg on the highway. 33-34 mpg just cruising at 65 mph (speed limit here). Pretty impressive for such an engine.

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Jordo!

Cool -- very much looking forward to the oil analysis, as I am planning on switching to this oil next based on your recommendation --which, BTW, is consistent with the wear mean UOA data in the oil nerd's thread (it showed among the lowest wear!). Be interesting to compare your findings to those data as well.

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Enjoy it. Destroy it.

tranceformer

It is indeed a thick oil for a 30 weight oil. It was definitely heavier than the 5w30 castrol syntec I used before. The UOA looked good, I needed a thicker oil for the 90+ degree heat down here in south Florida.

and how the heck did you manage 30+ mpg??

I'd recommend it as well. I'm on my second fill of that oil, I just got the UOA of the first fill. 4200 miles of 75% highway / 25% city and dozens of passes at the drag strip and it was looking pretty good.

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Ray
2009 370Z Base Sport 6MT / 12.860 @ 109.09mph / 1.921 60ft / street tires
official 1/4 mile track times

WarmAndSCSI

It could be the altitude or the car might just be a factory freak. Computer reported 31.8 mpg average after a ~90 mile leisurely highway canyon trip the other day. That was also with about 10-15 city miles thrown in there. That and the low oil consumption both let me know this engine is healthy.

Awesome on the oil analysis - ours should be really clean since the Z really doesn't see that much action being my wife's car. I think I can be confident leaving it in for 5000-6000 miles based on your usage and UOA.

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Z-Guy

If I live in Lakewood, WA which is located 45 minutes south of Seattle, would I be okay to run the 0w-30 Castrol Oil in my car? I' referring to the climate in my area. I did read the chart and the 0w-30 looked the best. Just curious what Nissan would say because they recommend the 5w-30. I just changed my oil at 1172 miles and I'm using the Ester Oil and the factory filter. Next oil change I will be using the PL 14610 and hopefully will have some good info on the oils. I'm liking the Castrol 0w-30 so far, just want to hear about the feed back.

LateralG'z

Royal Purple Only!!!!

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2010 Mag Black, 6MT,

WarmAndSCSI

You'll be fine. It may be thick for a 30-weight, but it's not too thick to ensure proper operation of your valvetrain.



Overpriced junk.

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LateralG'z

Royal Purple is the Best! nothing is better! you are confused

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2010 Mag Black, 6MT,

zZSoCalZz

FWIW... I went with the recommended Ester Oil for my first oil change @ 3400 miles. Was it worth the extra $$? Only time will tell. I rather be safe than sorry come 100K miles.

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2009 MB: Stillen G3 Intake // Customized illuminated kickplates frost blue Z //

wishihadnav

wow is this thread still going?..haha

LateralG'z

Yes it is! Royal Purple!!!!!!

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2010 Mag Black, 6MT,

Red370

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2011 Mustang 5.0 | 3.55's | Lethal Performance off road H-Pipe | Magnaflow Muffler Delete | JLT CAI/Bama tuned 417whp/ 404 ft/lbs

wishihadnav

fine its royal purple.. /thread.

WarmAndSCSI

Eh, you're not wasting my money on an inferior oil, so whatever.

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LateralG'z

Where are u getting facts that show Royal Purple is junk out of curiosity? Would like to see these facts please post the link

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2010 Mag Black, 6MT,