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96' R33 Rb25det

syfon

By syfon,
in Western Australia

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Dani Boi Grand Master

Dani Boi

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Hi guys, i'm just curious what is the best oil to use in my RB25. It currently has 126,000 KM's. I changed the oil around 2,000KM's ago and used a Nulon 15w-50.

What do you guys use? I mean, thicker, thinner, etc?

Cheers!

I got a 96 R33, use 0w30 mobil synthetic. There are heaps of threads regarding what oil to use

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autoworx Rising Star

autoworx

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personally I would use a slightly heavier oil than the 0 stuff in a 13 year old 100,000km+ rb

also I dont know what nissan australia recommend for the vq35 on their aus delivered 350z but the jap/usa v35s use a super light weight low friction oil and weve seen some slight issues with a heavier oil in them here

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syfon Veteran

syfon

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I just checked the oil during my lunch break, was barely any in the sump :s yet the dash oil-light wasn't on and the engine sounded normal o.O

Anywho, just brought 2 litres of that nulon till i completely change it on saturday.....

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br3ndan Mentor

br3ndan

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I just checked the oil during my lunch break, was barely any in the sump :s yet the dash oil-light wasn't on and the engine sounded normal o.O

Anywho, just brought 2 litres of that nulon till i completely change it on saturday.....

was the engine hot?

Usually to get accurate oil readings you have to drive it around till it hits operating temp. Stop the car and let it rest for about 5 mins (to let the oil drop down) and then check the oil.

Pull the stick out, wipe it and put it back in. When you take it out again, that's how much oil is left in the sump.

If you did that, ignore the above haha. :)

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R33_NICK Community Regular

R33_NICK

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Posted (edited)

i used to run Castrol EDGE 10W-60, valvoline 15w-40 and nulon 10w-40 but then i finally decide to settle with Motul 300V 10w-40 (gotta admit its expensive), all synthetic, nothing less.

how much oil did u put in? RB25s carry 4.7L including oil filter. i used to run 10W-60(pretty thick stuff) and 15W-40 and had no oil consumption, though it takes awhile 2 warm up

Edited by R33_NICK
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br3ndan Mentor

br3ndan

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lol

i have a feeling this debate on what brand of oil to use can go on forever... Basially tho theres a few things you need to look at

1. 100% fully synthetic... Like Mobil 1 or most other high end brands like redline.

2. Cold weight... should be max of 15... lowest of 0. This weight doesnt matter as much, as this is only when its cold... when it heats up it will get thicker. Thinner oil is better for cold start up anyway as it takes less time to move around and coat all ur engine parts. Its not like you are going to be thrashing the car while its cold. Easy driving only!

3. Hot weight... should be around 30-50... i wouldnt go anything above 50 as its a bit thick for street use.

Other then that theres not much else to think about.

So why do i use mobil 0-40? (apart from the above) Xspeed who check out my car recommended me to use it... so i did.

Edited by br3ndan
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Mr_GaZZa Rising Star

Mr_GaZZa

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personally I would use a slightly heavier oil than the 0 stuff in a 13 year old 100,000km+ rb

+1

and WOHOoO 30/50, thats like tank oil? you must have high crank pressure 24/7 haha, and then again i wouldnt use the THIN LIGHT oil,

engines pretty worn in at that km's and remember the engine oil goes throught the turbo.. so if you dont want to see blue smoke get something mid range

also I dont know what nissan australia recommend for the vq35 on their aus delivered 350z but the jap/usa v35s use a super light weight low friction oil and weve seen some slight issues with a heavier oil in them here

Nah sorry mate, i think you miss understood what i was saying. I had a skyline r33 low 100k km's just my reccomendations for his.

And also nissan i believe they reccomend 7.5w/30 in the 350z its a semi synthic i think... pretty much watery as.. its not too shabby so i dnt use it.

Also what problems have you seen lol? I've head some burn oil, maybe that super light thin oil justs run pasts the rings lol?

Edited by Mr_GaZZa
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syfon Veteran

syfon

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Haha i always seem to create threads that turn into debates :sick:

I think i'll try to Motul 300v chrono oil and see how it goes.

I put in 4.5 litres of oil when i last changed it, so it wasn't full but it was close to it.

I was thinking, as the oil passes through the turbo, maybe it is burning oil? My brother told me he saw a little bit of blue smoke but that was a few weeks ago and he recommended changing the oil to a diff viscosity and it shouldnt burn any....

Anywho, thank you all for your input, i will try a different oil and let you know how it goes!

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br3ndan Mentor

br3ndan

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and WOHOoO 30/50, thats like tank oil? you must have high crank pressure 24/7 haha, and then again i wouldnt use the THIN LIGHT oil,

engines pretty worn in at that km's and remember the engine oil goes throught the turbo.. so if you dont want to see blue smoke get something mid range

30/50 oil?

If u look again closely, i was saying thats the hot weight a skyline street driver should be looking out

0-15 is the cold weight that a skyline street driver should look at.

i did not mean the cold weight being 30 and the hot weight bbeing 50 :S not even a commodore should be running that!

So far ive been using mobil 1 and ive blown no blue smoke and it doesnt seem to use a drop of oil.

Ive also heard good things about motul 300v chrono.

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