Jump to content
SAU Community

Recommended Posts

Just noticed,

My rb25det oil pressure dropped, from the *4 Mark, down to the first line,

normally always sitted at the 4 mark, now its sitting at the first line *unmarked line*,

No oil leaks, I could find, some slight oil residue comming from rocker covers.

Oil level is fine, But have noticed turbo making slight werring or whining noice when boosting hard now.

Thinking that My oil pump could be showing its age..

anyone agreee? disagree?.

Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/
Share on other sites

firstly i'd get that seepage out of the rocker covers fixed.

and its more than likely to be your turbo rather than your oil pump. a blown oil seal in your turbo will cause the lower oil pressure.

check for oil in your intercooler piping at the lowest point then report back.

Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/#findComment-2753081
Share on other sites

firstly i'd get that seepage out of the rocker covers fixed.

and its more than likely to be your turbo rather than your oil pump. a blown oil seal in your turbo will cause the lower oil pressure.

check for oil in your intercooler piping at the lowest point then report back.

Pulled off front pipe (lowest pipe) , found small trace of oil residue, when i whipe my finger on bottom of the inside of the pipe,

I would assume this is normal?

Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/#findComment-2753362
Share on other sites

same pressure cruising or at idle. or not much change noticable.

oi is nulon high tech fast flowing 10-40w, for import turbos etc.

been using same oil since i got it.

havnt checked with full throttle yet.

Edited by silverbulletR33
Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/#findComment-2753926
Share on other sites

same pressure cruising or at idle. or not much change noticable.

oi is nulon high tech fast flowing 10-40w, for import turbos etc.

been using same oil since i got it.

havnt checked with full throttle yet.

im asking for the actual pressures.

Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/#findComment-2753937
Share on other sites

  • 2 weeks later...

OK cruising at 110, and giving it a bit, went just over the *4 mark.

thought it Might possibiliy have something to do with the viscosity of the oil, so i did a oil and filter change, and now back to normal.

now sitting on 4-6

So, Nulon Hi-Tech, fast flowing stuff, which is 10-40w, after 3900kms looses some viscosity which make the drop in oil pressure.

:) maybe ill try new oil next time.

theres gotta be something wrong for it to loose its viscosity only after that muc kms? or is this the norm?

Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/#findComment-2772147
Share on other sites

Sounds like the oil sender/guage is faulty.

Best bet would be to use a second guage to confirm that to make sure that it's not a major issue.

I don't think it's the oil pump, because if the oil pump was going, the oil pressure would be low, not high.

on idle, it should be around 2. If it's up at 4, that's reading twice as much, so i'd think it's the guage/sender

Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/#findComment-2772779
Share on other sites

I don't think there's anything wrong with the oil. For the pressure to double, that would have to be pretty majorly wrong.

That nulon oil is good stuff.

It could be anything mate. tempamental sensor? Or guage a bit lazy for a moment.

Just see if it happens again with this lot of oil.

Link to comment
https://www.sau.com.au/forums/topic/147504-oil-pressure/#findComment-2772782
Share on other sites

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

    • Wife wanted basket things in the wardrobe in our temporary house. Thought about ripping our the wardrobe and fitting the entire IKEA set, but it's a temporary house and we want to move in a few years. So IKEA advertises this as a 50cm unit, however the actually basket and rails measure 46cm wide. Only issue was depth, IKEA stuff is quite deep, where as the builder special junk is super shallow at less than 40cm. Send it, chopped the rails, then offset the mounting holes, job done, happy wife, less shit scattered all over the bedroom. Did the same to the other side too. Also drove the Skyline shit box today, dropped off oil at Supercheap Auto. I didn't realise they only now take max 2x bottles per visit. I visited 2x Supercheap Autos.  
    • I've seen similar actually in my situation. You never know what tables are attempted to be used when the car thinks it's -99C or +200C. The fail state is not usually that extreme but you know what I mean - it was in my case though! This is where being able to read all the sensors is useful cause you see this stuff really quickly.
    • The above is very important. However as long as you keep timing relatively low, it's plausible to make your own knock ears and plausible to learn to tune with a modern ECU that can do wideband O2 correction like a boost controller. I mean if you only have one viable road to even drive the car on, learning to tinker to this level may be worth doing given you can't do much else with the car...?
    • I find the fact that the rear plate has to be bent inwards at the rear not so bad: but the front is just awful: It's like come on. (these are my very old, now retired/turned in plates) TBH it is a lot of money to fix a minor issue, the fact I said "I'll never really spend the money on doing this" is why people ended up buying them as a gift for a 'car guy' who can be hard to shop for.. for car guy things.
    • I just bent the ends of my premo plates. It even went through Regency like that after the engine conversion and the inspector (a great bloke!) just squinted his eyes and said "I didn't see that". Plates, and how they look, are just something that have zero importance to me.
×
×
  • Create New...