Oil Pressure For Rb25

[nizmokid]

I have put a set of white dials into my car but forgot to have a look at the oil pressure when cold to put the needle back in the right place.

so What is the best way to find out where the needle sits on the car before I crank the motor?

HELP !!!!

[d00dz]

The oil pressue should sit at 0 when car turned off..

It should goto ~2-4 when cold start..

Running warm should be around 1-2.

Someone correct me if im wrong

[Revhead]

Definitely 0 when not running. Without the oil pump running there is no oil pressure.

Depending on age/condition of your motor and the viscosity of the oil you use, you could see anything up to 7/8 or so when cold, and 4 when warm. The 33 I drive practically every day sits on 4 when cruising on the highway, but my old car used to sit just above 2.

If you're worried, put a second oil pressure guage in to compare readings.

[Nismo_God]

hi all, just wondering if this is normal. I just changed my oil last night but this morning i noticed it was all the way to the top when I first started it, it dropped as the oil heated and sat pretty normal. What is the real concern is that when i give it to it, it rises up past half way getting closer to the top. Im only new to the skyline seen been that i have only had it for 2 months. Is this normal?

[mid life crisis]

mine sits on 7 when first started but as the temp reaches operating temp the oil pressure sits just above the 4 the rest of the time

cheers

[Nismo_God]

Can anyone please confirm if it is normal for the oil pressure to rise as i rev harder...when i accelerate the pressure rises and when i push it harder, ie 4000+, it rises higher getting closer to 8. is this normal?

[Jdfnq]

Can anyone please confirm if it is normal for the oil pressure to rise as i rev harder...when i accelerate the pressure rises and when i push it harder, ie 4000+, it rises higher getting closer to 8. is this normal?

It should rise as the revs rise......

8 seems high though....

What viscosity oil did you use???

Just changed oil.

i use 5-30 and the gauge reads lower now. Needle sits about 4 when hot and running at revs

[Nismo_God]

the dude at the shop wouldnt let me leave with the oil i wanted...he gave me 20-60...i thought this was wrong but he assured me it was correct. would this be throwing it high? im going to the drags tonight and dont want to blow a head gasket...

[Aif]

i think the oil for stock rb25det is 10-30 or 0-30, not sure if its the same for the non-turbo engines, i just got magnitec 10-30 for mine and its rises with revs and it still runs smoothly (though it doesnt rise up to 8).

[Jdfnq]

the dude at the shop wouldnt let me leave with the oil i wanted...he gave me 20-60...i thought this was wrong but he assured me it was correct. would this be throwing it high? im going to the drags tonight and dont want to blow a head gasket...

Be a bit thick wehn the oil is cold.....

should be fine once warm though......

[Revhead]

Yeah 20W60 is a bit thick IMHO but shouldn't cause any problems.

Pressure will rise with revs as the oil pump is crank driven. The harder the engine revs, the faster the oil pump spins.

[blind_elk]

A 30 grade (hot) oil, ie X-30, is basically designed for the cooler conditions in Japan. Coming summer in Oz, I would think you could probably run a slightly heavier oil, like 10-40. Maybe 20-60 is getting a bit too thick.

[Nismo_God]

so im getting the idea it a lil too think but is it too think to be absolutlely smashing the engine at the drags....should i drop the oil beofre hand? am i being a lil over precausious?

[mad082]

IMHO 20w60 is way to thick. stock oil is 7.5w30.

i use 10w40, but am going to be changing to 5w50.

my pressure goes to about 7 when cold then drops to just under 4 when hot.

[Nismo_God]

gues i wasted $35...damn im going to buy some oil at lunch and go home to do the fastest oil change in history. Oh and when i sell it i can say i change the oil daily....engine care is what im passionate about....i even put in one of those engine tune up things....damn