Provent oil drain

[Dr Gary]

Checking for a place to return oil from the Provent, I found the oil return pipe for the turbo connects to the "upper" sump.
Has anyone used this connection for oil return?? and is this pipe under pressure??
It seems oil collection/disposal is a common issue.

Any comments welcome.:)

[Fireblade]

i ran the drain hose down to the left chassis rail and its tucked behind the rubber splash shield. to drain it i fold up the rubber shield and pull out the drain hose and drain it into a bottle.
im not keen to have the return go back to the engine after one time in winter the catch can oil was milky due to condensation.

[BillsGU]

Yep - I agree. I would rather drain it than put it back into my engine. I (or my mechanic) drain it during an oil change. It's not an issue.

[mudski]

Oil disposal isn't really an issue. Just drain the can at every oil change and dispose of the oil with the old sump oil. I have the hose with a ball valve running down and coming out in the inner front guard and its secured to the sway bar bracket on the chassis rail.

[Dr Gary]

Thanks for the comments. Seems the common solution here is hose and valve down the side.
I did research Mann (the Provent maker) and they suggest either return oil to the sump, or vent the "cleaned" air to the atmosphere. Either way, there is minimal oil build-up in the catch can.
I think (but do not know) that blocking both oil drain and return air has some effect on the way the Provent works. Return air is under back pressure from crankcase pressure. More work to do

[mudski]

Thanks for the comments. Seems the common solution here is hose and valve down the side.
I did research Mann (the Provent maker) and they suggest either return oil to the sump, or vent the "cleaned" air to the atmosphere. Either way, there is minimal oil build-up in the catch can.
I think (but do not know) that blocking both oil drain and return air has some effect on the way the Provent works. Return air is under back pressure from crankcase pressure. More work to do

Venting into the atmosphere is illegal and if caught you will see a hefty fine. Even running a catch can is illegal, as the old laws have not been changed since the invention of a closed circuit system rather than an open circuit. I had to remove my Provent when I had the Patrol engineered.
The extra work required to plumb it into the sump, you will need a non return valve too, its seriously not worth it. It takes minutes to turn the tap on and drain it when you do a service.
But its your car, your choice.

[Hodge]

Exactly what mudski said.
It's a no brainer. My kit from Provent came with the hose and valve ... Simple.
Drain every service. Easily accessible.
http://www.nissanpatrol.com.au/forums/images/imported/2019/02/89.jpg

Sent from my SM-N920I using Tapatalk

[Brissieboy]

Even running a catch can is illegal, as the old laws have not been changed since the invention of a closed circuit system rather than an open circuit.
They are not illegal - at least in Queensland. I enquired with TMR in October last year and this is their response:

Thank you for contacting the Department of Transport and Main Roads (TMR) about aftermarket oil separate/catch cans.

The Vehicle Safety Standards Branch of the Department of Infrastructure and Transport, in Canberra, administers the Motor Vehicle Standards Act that requires all vehicles, when first supplied to the market, comply with all applicable Australian Design Rules (ADRs). The ADRs set the minimum safety and emission standards for vehicles. However, Queensland legislation requires that vehicles continue to comply with the ADRs applicable when the vehicle was first supplied to the market in order for them to be registered.

This modification would not require certification or approval from TMR providing the oil separator/catch can does not increase the gas emissions beyond the requirements in the ADRs and does not vent to the atmosphere.

Please find attached link to ADR79/04 https://www.legislation.gov.au/Series/F2011L02016

I trust this information is of assistance.

Kind regards,
Peter
Vehicle Standards | Standards and Accreditation
Transport Regulation Branch | Department of Transport and Main Roads
Floor 9 | 61 Mary Street Brisbane 4000
PO Box 673 | Fortitude Valley Qld 4006
P: 13 23 80
E: vehiclestandards@tmr.qld.gov.au
W: www.tmr.qld.gov.au

[mudski]

They are not illegal - at least in Queensland. I enquired with TMR in October last year and this is their response:

Thank you for contacting the Department of Transport and Main Roads (TMR) about aftermarket oil separate/catch cans.

The Vehicle Safety Standards Branch of the Department of Infrastructure and Transport, in Canberra, administers the Motor Vehicle Standards Act that requires all vehicles, when first supplied to the market, comply with all applicable Australian Design Rules (ADRs). The ADRs set the minimum safety and emission standards for vehicles. However, Queensland legislation requires that vehicles continue to comply with the ADRs applicable when the vehicle was first supplied to the market in order for them to be registered.

This modification would not require certification or approval from TMR providing the oil separator/catch can does not increase the gas emissions beyond the requirements in the ADRs and does not vent to the atmosphere.

Please find attached link to ADR79/04 https://www.legislation.gov.au/Series/F2011L02016

I trust this information is of assistance.

Kind regards,
Peter
Vehicle Standards | Standards and Accreditation
Transport Regulation Branch | Department of Transport and Main Roads
Floor 9 | 61 Mary Street Brisbane 4000
PO Box 673 | Fortitude Valley Qld 4006
P: 13 23 80
E: vehiclestandards@tmr.qld.gov.au
W: www.tmr.qld.gov.au

Yeah quite possible they have finally update the rules then. My Patrol was engineered maybe two years ago, in Vic too.

[Dr Gary]

A picture is worth a 1,000 words. Thanks for that.

[marknkateb]

I went a slightly longer route... I ran the tube along the LH chassis rail and when it hit the radiator mount panel curled it down and towards the plastic wind deflector under the radiator shroud. The hose is on a slight downwards run all the way and can collect a goodly amount of oil with no chance of the truck sucking it back if you forget to drain it for a while. I just cable tie it behind the end of the plastic so it cant be ripped out.. One last thing for engine safety is I silver soldered the end of a standard airline fitting (same thread) and wound it in as a bung with some sealer tape. There are two benefits here, 1. cant suck in fresh air or water if you forget the close the spigot (it's a sealed surface), 2. protects the ball cock from dirt and crap .... when i drain it, i just cut the cable tie, drop the hose down and take out the bung and drain, once drained, return the bung and re cable tie....

[geoffayres]

When I installed the Provent many years ago, I fitted a check valve to the drain and tee'd it into the turbo oil return line to the sump.
I've never had any condensation in the Provent....just oil, nothing else.
Set and forget, and I've never had any reason to think I should have done otherwise.

[mudski]

When I installed the Provent many years ago, I fitted a check valve to the drain and tee'd it into the turbo oil return line to the sump.
I've never had any condensation in the Provent....just oil, nothing else.
Set and forget, and I've never had any reason to think I should have done otherwise.

You still floating around mate... How are things? You obviously still have your Patrol.

[geoffayres]

You still floating around mate... How are things? You obviously still have your Patrol.

Hi mate. Yep, I still pop in from time to time. Things are OK thanks, just too busy with work and home stuff to get away as much as I'd like.

You bet I've still got the Patrol. It's used for holidays or towing duties only these days. I'll have had it 20 years next Jan, and have no plans to change. I don't see anything that else excites me enough....

How's it all going for you?

[mudski]

Hi mate. Yep, I still pop in from time to time. Things are OK thanks, just too busy with work and home stuff to get away as much as I'd like.

You bet I've still got the Patrol. It's used for holidays or towing duties only these days. I'll have had it 20 years next Jan, and have no plans to change. I don't see anything that else excites me enough....

How's it all going for you?

Going pretty good for me. Life is getting busier and busier, due to buying a renovators delight a couple of years ago. So my Patrol just sits there unfortunately.