VQdriver

iTrader: (1)

People here and G35driver tend to believe that Mobile 1 0W-40 synthetic and Castrol Syntec 0W-30 are both really "heavy" 30 weight oils that test really well in our motors. I've run both these oils in all the family's cars with VQ and EJ motors for that reason. Also, fwiw, BMW recommends both these specific grade/brand of oils as makeup oil or compatible oil changes for their cars. The other compatible brand/grade is Valvoline synthetic 5w-30. They must know a thing or two about motor oil in their engines.

Resolute

iTrader: (2)

I've finally got around to updating the UOA comparison chart with all the new UOA's collected since the last time I did this. I've also started on updating the first page of info. I should have some new stuff posted in a week when I finish the write-up.

Will

More work stuff came up and I have had to travel a lot. I have the new comparison chart done, but am not finished with the new write-up. Hopefully I can find some time to finish this soon.

JDMStanced

iTrader: (16)

i used Mobile 0w40 for the first time along with stillen high cappacity oil pan. Occasionally i was getting grinding noise at cold start up. It seemed to be OK if i jerk around the car while i start up lol
Now i have castrol 0w30 for the second time. I really like it, especially the smoother engine sound at WOT.

omsin523

iTrader: (8)

Yeah im running the 0-30 castrol too, but its discontinued now.

JDMStanced

iTrader: (16)

full of 0w30 in CA haha

KingBaby

iTrader: (3)

Is either of you guys in your second change with castrol. I'm going on my third change with mobile one. Haven't experience any noise or extra chatter than normal. Great to have more inputs and reviews on this topic.

omsin523

iTrader: (8)

Well my first oil sample i done was with mobil one 5w30 and my iron was high. After that I ran the Castrol edge 5w30 but haven't sent it out as yet for a sample still sitting in my room. At the moment I have the Castrol 0w30 car seems a little quieter.

JDMStanced

iTrader: (16)

i only consider mobile 0w40 and castrol 0w30 for now since they are the TRUE synthetic oill. Now that i didn't have good experience with mobile 0w40, i'm staying with cstrol 0w30 for now.
Anyone have tried mobil 0w40 diesel oil, or 10w40? It sounds like they could be well used for track.

JDMStanced

iTrader: (16)

Actually, the grinding noise that i sometimes get from start up might be because of the plate thing around the oil pick up.
I started to get the noise after Stillen oil pan installation which you are required to enlarge the hole in the plate (oil pick up thing goes through the plate). It may be the the oil pick up thing touching the plate due to not having a larger hole.

VQdriver

iTrader: (1)

Any thoughts about using Castrol Edge with titanium? The commercials say it's supposed to hold peak hp 60% longer than Syntec. Of course it's advertising, but they gotta keep improving the product, correct? We're still stuck using 10 year old GC.

knkw98

Is M1 0W-40, Mobil1 0W-40?

Also, what would be preferred for living up north for the 350Z? I am guessing a synthetic 0W-30 or 0W-40 oil? I guess I will give Mobile 1 0W-40 synthetic or Castrol Syntec 0W-30 a try.

Thank you for the information overload.

knkw98

I also was wondering about the Castrol Edge with titanium, but not sure why titanium would help hold hp?

tquill

iTrader: (15)

I really have no idea, but seems like a marketing ploy to me. Next they'll add "originally designed by nasa."

thescreensavers

iTrader: (2)

my guess is that his has more additives to last longer, so you can use it to extend OCI, it might have titanium in it, but its marketing imo

RD400

The marketing part is that Castrol Edge has been renamed to Edge with Titanium, and the old Syntec is now called Edge with Syntec technology. The 60% longer hp claim most likely marketing too.

The new 5W-30 Titanium is way thinner than 0W-30 German Castrol - 9.8 cSt @ 100C compared to GC's 12.1. The 10W-30 is almost as thick as GC at 11.4 cSt @ 100C. If your engine can handle a thinner oil, I'd try the 10W-30 as it is a much more modern SN formulation than the SL of GC.

Titanium is an antioxidant and antiwear agent, which seems to have replaced molybdenum as a friction modifier.

tquill

iTrader: (15)

I'm running the green GC 0w-30 right now. I'm about 1000 miles away from changing it to the gold. It should be interesting to see the differences.

JDMStanced

iTrader: (16)

are castrol 5w50 and mobile 1 5w50 too thick for street driving, drift and autox? My oil pressure drops to little under 15 psi from 30 psi after little bit of drifting at events.
i never saw 5w50 until yesterday.

omsin523

iTrader: (8)

Yeah that seems pretty thick to me, maybe try the m1 10w40 or 0w40

JDMStanced

iTrader: (16)

I thought about m1 5w40 high mileage. but I heard from somewhere that high mileage contains some additives for cars over 75000 miles.
it doesn't sound so good

omsin523

iTrader: (8)

yeah I wouldn't go with the high mileage bro. Stick with the regular synthetic Im running the castrol edge newer titanium version. I ran the 0w30 gc have the sample sitting on my shelf just haven't found the time to send it out.