Jump to content
SAU Community

Recommended Posts

Motul turbolite 10w40 is just a Semi-Syn oil, I would recommend at least a fully synthetic for turbo cleanliness and high temp protection. A wide spread 10w40 type semi-syn is not really a good idea for ring cleanliness i would think. Choose Mobil 0w40 or Delvac 5w40, whichever is cheaper. those are good oil at reasonable prices.

Theres a lot of speculation about what to get lately, is this because of summer?

I am running Mobil 1 5W50 at the moment and was gunna put Motul 10W40 in next month for my routine oil change but your saying its no good for ring cleanliness being semi-synth.

So Delvac 5W40 (If I can find it for sale) or Mobil 0W40 would be better and cost less?

Theres a lot of speculation about what to get lately, is this because of summer?

I am running Mobil 1 5W50 at the moment and was gunna put Motul 10W40 in next month for my routine oil change but your saying its no good for ring cleanliness being semi-synth.

So Delvac 5W40 (If I can find it for sale) or Mobil 0W40 would be better and cost less?

Ok, a wide spread oil like 10w40 Semi-Syn are going to contain loads of VII (viscosity index improver), these VII polymer are weak in nature and will form deposit under high heat & shearing condition. That's not really a good ideal for a hot & fast spinning turbo, do we...

That's why a good Synthetic (naturally multi-grade thus also eliminating the use of VII) with mostly group IV (PAO) or V (polyol ester) base oil will have a performance advantage over any Semi-Syn or mineral oil out there.

Delvac 1 are rumors to be group IV/V blend while Mobil 1 0w40 are PAO/AN blend thus the value.

Edited by Trex101

Motul Turbolight is OK for the money. Some places charge >$40 for a bottle and thats a rip off for a pretty ordinary oil semisynthetic. People get all excited because it has the word "Turbo" in the name and assume its a good oil for turbo based cars. Judging by its OEM/API certifications, its pretty ordinary.

Hello all, im about to do another oil change dropping the 0w-40 castrol edge.

Im leaning towards the motul but which one for the high horse power RB25.

MOTUL 300v chrono 10w-40

MOTUL 300v power 5w-40 or the 5w-30

Busky2k helped me out alot last time with advice, what do you think.

Busky2k knows his stuff like trex.

They might suggest the 10W40 300V from that selection. The a general all rounder and favoured in Oz.

If its street car, daily driver I would be leaning towards a 5w30 300V as like the redline is HTHS and film strength is quite high for a 30wt which better cold start cSt ratings for engine protection.

But ppl in Oz are scared of the "thin" oils...even though most ppl are not clear on what their requirements really are. The US OEM of choice for new cars these days is like 20wt!

If ur car sees any tracks...at least the 40wt IMO.

im using formular R 10w-60 on my GTR and been thinking of going 5w-30 or similar.. havent had problems with the 10w-60 but the price of $55 for a bottle is a bit exy.. just wondering if anyone reckons the swap will be noticable? better fuel economy as its thinner.? GTR doesnt chew oil.. A1 condition.. ;)

0w-40 should cope with heat better than the 5w-30.

the GTR sees no track and is realy a commuter so the 10w-60 is a waste i think..

thanks

mark.

Edited by markimak
im using formular R 10w-60 on my GTR and been thinking of going 5w-30 or similar.. havent had problems with the 10w-60 but the price of $55 for a bottle is a bit exy.. just wondering if anyone reckons the swap will be noticable? better fuel economy as its thinner.? GTR doesnt chew oil.. A1 condition.. :happy:

0w-40 should cope with heat better than the 5w-30.

the GTR sees no track and is realy a commuter so the 10w-60 is a waste i think..

thanks

mark.

I would suggest GC 0w30 for both fuel economy gain & protection but do check for fuel dilution (UOA) if you are running rich AFR.

Edited by Trex101

im using penrite SIn 10w70 in my r32 gtst its ok but after the cars warm and you start it again it seems to get average oil pressure. ill be changing to motul crono 10w40 next oil change the warm ups for that oil could be exciting though... having close neighbours.. and going to work at 5am they'll love the loud rb rumble!

warming a car up by letting it idle is an absolute waste of time. start it, wait 10-15 seconds for the oil to circulate and then drive off gently.

not only that, long idle peroids is bad on ur cyls also. Glazing I think is the correct term.

is german castrol same as castrol.?

would i notice a difference switching from 10w-60 to 5w-30 castrol EDGE?

can someone give some hard evidence on pros and cons on warming it up. im a firm believer of warming the GTR and GTT up. having ceramic turbos and all. saves ur rings. gets the oil closer into the heat range

is german castrol same as castrol.?

would i notice a difference switching from 10w-60 to 5w-30 castrol EDGE?

can someone give some hard evidence on pros and cons on warming it up. im a firm believer of warming the GTR and GTT up. having ceramic turbos and all. saves ur rings. gets the oil closer into the heat range

I noticed the difference when i went from a 10w 60 edge to the 0w 40 edge motor ran cooler and it felt like better acleration.

It's amazing how many placebo feelers there are. Some of you guys have siad it makes the motor run smoother, idles better, turbo spools faster, etc.

Does it make your radio run smoother too? does it make your seat more comfortable?

Honestly, any difference in feel would be hardly able to be felt. It'd be interesting to see if the oil was changed wihtout them knowing what oil is actually in there to see if htey can feel it.

is german castrol same as castrol.?

would i notice a difference switching from 10w-60 to 5w-30 castrol EDGE?

can someone give some hard evidence on pros and cons on warming it up. im a firm believer of warming the GTR and GTT up. having ceramic turbos and all. saves ur rings. gets the oil closer into the heat range

no.

check the link in the origional post.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • GTSBoy on your suggestion on another thread I had a look at those injectors and ended up getting them because of the quality.  Got the expensive ones.  
    • Hey guys been looking everywhere to try and find the correct gtr hood latch support part number but only found the first half and when I search with that number it sends me to an r34. The first part I found was 62515. If anyone could help me with the rest then I’d really appreciate it. Or if there’s some alternative hood latch support that would work even better cause I can’t find any for sale. (Searched on upgarage, partsouq,buyee,rhdjapan) 
    • If you've only done the upper control arms on the rear, AND you have changed their length (by more than about 1mm) to set the camber you want, then you will definitely need/want to install traction arms also. Adjusting the camber arms on their own WILL introduce bump steer and make the car unpleasant to drive. Most owners have no idea that their car could behave infinitely better than what they put up with. I'm not entirely sure what the Stageas need, but I am thinking that unless you have massive front spring rates and pretty soft rear springs, you have waaaay too much rear bar. Oversteer city, in my estimation. Combined with possible excessive bump steer from maladjusted arms, that could be a recipe for nastiness. ATR43SS2 is not a highflow. It is an outright replacement turbo. It's a little bit bigger than the largest highflow profile that Tao does. Probably a solid 300rwkW turbo where the bigger highflows will be about 30-40rwkW less. Nevertheless, we're only talking about ~300 rwkW, which is well within the abilities of the stock ECu to run with a Nistune on board. I would do so without hesitation - and I will be doing so when I get my finger out and actually get the injectors and AFM installed. But, if you would prefer to drop a whole lot more money on the ECU side, then I suspect you're looking at Haltech. The Haltech fanbois here will all spout on about all the available engine protection you can have, that you can't have with the Nistune option. And they're right. But it doesn't really come for free either. You will spend more money on extra sensors and the like, plus the work to install them. If the engine was built and therefore represented a big investment to protect, then I'd say definitely do it. If you view the current (and forever into the future) shortage of replacement engines as something to prompt similar protection, then also, do it. If you see a destroyed RB25 as an opportunity to put in a Mercedes or other V12 (like I kinda do)... then your perception of the risk/reward might differ. These are good injectors. You can also get a "better" set of the same with more flow matching, for more $$. 1000cc is where you will want to be. You will need an R35 AFM and adapter tube if you want to stay with Nistuned stock ECU. Otherwise, if going Haltech, you can ignore. As for intercooler. Just about anything will do. You're only talking about ~300rwkW. Just put a big core in there. Be aware that return flows do add significant pressure drop and will cost power and will make the turbo work harder to achieve the same goals. If you can manage a proper crossflow, do it. I'm keeping my very good return flow because I'm only expecting to be in the ~250rwkW range, and will live with whatever outcome I get.
    • I have a heap that i have collected if you want some authentic ones still. Pm me if your interested!
×
×
  • Create New...