Oil on air filter and lots of oil in catch can

[Hodge]

Just quick one... Which way does the filter go back in correctly. One side is that foam type round thing seal and the other a rubber seal. I'll assume rubber seal down, closer to intake?
I got preoccupied with other s***, and few stubbies later i realized filter is still out, and i cant remember which way it came out.

[kevin07]

can I ask what size reducers do you have on the catch can

[Hodge]

can I ask what size reducers do you have on the catch can

Hey mate. They are 1" - 1/2".

[boots]

Your inlet and outlet hoses look fine mate but your drain hose is way too short mate , get another length of it and run it half way along the chassis rail and plastic tie accordingly , 100ml of oil per 1000km is not unusual as Rumcajs has pointed out . Oil resistant hose is the go if you want to do the job once and forget about it .

[Hodge]

Attachment 43327
Thanks mate. I've already extended it. Just working on a proper mounting bracket before I re-fit it tomorrow.

I got some of that flared falcon hose today. One flared end. The bloke asked what year, engine size falcon, I said no idea, and when he showed me this one for example it looked right. Then I told him what my purpose for it is, and he said, I'll be changing it in a months time since oil will degraded it big time. Was dirt cheap so I got it anyway to try.

[Rumcajs]

Just quick one... Which way does the filter go back in correctly. One side is that foam type round thing seal and the other a rubber seal. I'll assume rubber seal down, closer to intake?
I got preoccupied with other s***, and few stubbies later i realized filter is still out, and i cant remember which way it came out.

This one is a source of great arguments. Depending who you ask you'll get different answer.

Nissan tech bulletin ==>

new “viscous” air cleaner
element (P/No. 16546 VB300) ensuring that the lip seal is “down

......the "official" Nissan Australia position is the seal must go down.

Japan has nearly always fitted them opposite to this advice.

If you look at ZD30 reference document in there is an argument which puts the rubber seal up.

I keep it fitted with rubber lip down.

Cheers

[Hodge]

I'm resurfacing this thread as I just realized again that my catch can is filling up at an alarming rate. The photo below is after a 130km run mostly at 100km/h. I estimate roughly 200ml in there, and once again my little tap at the bottom of the drain hose was leaking so, oil has leaked out too, how much is unknown.
Rumcajcs mentioned too much oil in the sump. Say it isn't so? Am I looking at blow by created by worn piston rings? Or a stuffed turbo letting too much oil into the intake?

Attachment 44677

[Rumcajs]

I'm sorry but that isn't 200 ml. Grab your kitchen measuring cup and see how much is 200 ml (use water of course).

Too much oil in the sump will contribute to excess oil out of the blow by. I don't know how it is on CrD but on Di 7.5 L is all it takes to go to full mark on the dipstick.

There is a picture somewhere with oil sump removed and filled with 8.2 L of oil, it literally almost overflows at the side edges.
That's plainly wrong but is a result of Nissan doing a dodgy fix on early 5.6 L oil volume.

If you are not doing oil changes yourself chances are that mechanics are overfilling the engine every oil change progressively as it takes a while to drain it properly (I allow for + 1 hour)

No garage will do that, at best it will be like 10 mins.

Check the oil level in the morning before you start the engine so you can see where it is on your dipstick.

Cheers

[Hodge]

Thanks for the reply mate. I overestimated that bit of oil in the tube. It ended u being around 70-80mL. That was on top of a massive puddle under the car due to my leaking drain tap, and then who knows how much leaked out during the trip. If right, then the filling up of the catch can will settle down, as the excess oil is gone. It's been nearly 6k since last oil chance, and maybe 600 of that, was with the catch can fitted.
Nissan serviced the car last few times, and i can tell you right now they didn't wait long to drain the original oil, as it seemed like I was in and out in no time.
Maybe I'm panicking too early but, to me it just seemed very excessive.

[Hodge]

I'm resurfacing this, just to say that Rumcajs is spot on with the too much oil theory.
I just emptied my catch can drain-tube again, which I do weekly to keep an eye on it. 1600km gave me exactly 100mL drained out of the catch can. Now, 60mL of that has only been caught during the last 400-500kms. What happened 400kms ago? That's right, Nissan changed my oil and filter.
So seems like they haven't drained the old oil long enough and topped it up with new oil, and overfilled it, and now excess is coming out via blowby and into the catch can...
Or my engine is doomed. But so far the timing of the oil change and the kms done, vs the amount drained, adds up to too much oil. I hope so anyway...
Thought I'd update this for future reference in case anybody else questions excess oil out of the catch can.