Epic Oil Leak

[C4NC3R]

Just got a message from my housemate, it seems that on my way to work today I've had an epic oil leak in the R34, enough to leave a clear pattern all down our driveway.

The whole way to work though I was watching the gauges as I do and nothing was out of the ordinary, all the gauges work fine, oil pressure was normal etc. I've checked the oil and there's hardly any in there, and there's a little puddle under the car, so it obviously is leaking.

Looks to be comming from the turbo side, so I'm thinking the only places it'll be comming from will be the Oil feed line from the block, to the turbo, and then the outlet. The oil return seems to be all done up fine, so that's not the issue, so I'm going to do everything up tight, smash more oil in, run it and watch for leaks. Anywhere that I've missed that oil could be comming from, unless I've got an epic problem somewhere?

TL;DR - Massive oil leak, yet no drop in pressure on gauge. Strange? And where on the turbo side of an RB25 could oil leak?

[N1GTR]

Well you can have an oil leak, but the pressure wont drop down until there's not enough oil left in the sump to supply the oil pickup continually. Sounds like you're getting close to that point!

[Bunta]

Well you can have an oil leak, but the pressure wont drop down until there's not enough oil left in the sump to supply the oil pickup continually. Sounds like you're getting close to that point!

+1

My car once got to having only a litre left before i started to notice the oil pressure doing funny things

[NSNPWR]

Yeah below a litre or so and you'll start get the warning light etc...doesnt mean in the meantime the little amount of oil thats left isnt BOILING along with your bearings etc etc etc....

Could be the oil return or feed...if its not pissing out under pressure then its probably the oil return...hose could be split and you wouldnt even know it unless it was in your hand.

[ali-turko]

you knew you had a big oil leak and you kept driving it??

hmmm

[R31Nismoid]

The leak will be after the sender, so as the others have said you might not neccesarily notice it.

Add to the fact factory gauges are rather slow @ responding and not overtly accurate. You could have dropped 10psi for example and the gauge might not have even moved - which as Steve said, it's probably not far off rather bad news.

It could also be travelling from elsewhere mate, running along/down hoses, subframe from the filter side etc. My own car leaked on the drivers side, but it was coming out the oil drain for the turbo... down the hose and across the subframe to the drivers side as it was parked on a slight angle

A hoist will make short work of finding where the leak is coming from.

[C4NC3R]

I had no idea I had an oil leak until a few hours after I got to work and got a message from my housemate.

I've gone through and had a look now, did an oil change and checked over all the turbo related oil lines etc, ran it for a while and haven't noticed any oil leaks, will move it out of the carport in a mit and check out the ground, see if it's still leaking. If it's not then I'll chalk it up to loose oil lines, and keep an eye on it over the next few weeks. I'll be putting a new turbo one over the next few weeks, so I'll check out all the lines then if it seems to be alright, see what it could have been.

And if I move it and there is oil on the ground, well then the turbo is comming off tonight to see where the oil's comming from =P

[PM-R33]

Your a very lucky man that your work wasnt 10 minutes furthur. Might have been the difference between life and death (engine wise ).

[z-edition 006]

Do you have brainded turbo hoses?