JayGee wrote:

It's never going to cause a runaway as it's not dumping oil in the intake side. Mine smoked very badly when I first had it but I only get a mild puff now and again when I use the 2nd turbo. Seems to be worse in summer as I've gone a few months in the winter without using the 2nd turbo and not seen smoke.

Exactly my understanding too  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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JayGee wrote:

It's never going to cause a runaway as it's not dumping oil in the intake side. Mine smoked very badly when I first had it but I only get a mild puff now and again when I use the 2nd turbo. Seems to be worse in summer as I've gone a few months in the winter without using the 2nd turbo and not seen smoke.

A runaway diesel engine is caused by oil (a large and continuous amount) being sucked past the turbo seals (due to wear) and into the engine to be combusted. I've not seen blue smoke from mine so it's not being burnt in the cylinders. Grey smoke means it's just oil vaporising in the exhaust. 2012 TDV8 Vogue (L322)

Ah ok.

Mine was very definitely blue and the engine note changed too whilst it was smoking. The OP also said the smoke was blue and when it was smoking it made a rattling noise which to me sounds like pre-ignition? BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

Oil from the secondary turbo of my 3.0 TDV6 D4 certainy went through the engine and got burnt causing lots of smoke, coughing and pre-ignition with wide throttle openings until the smoke/oil cleared prior to my fitting the TDV6 revised drain. Hence my request to the selling dealer when purchasing my almost new L322 to have the modification done as part of the deal as I knew that it wasn't a simple bolt-on task like the TDV6 revised drain. However the oil is never going to cause runaway because the air supply to the secondary turbo and its oil pool gets shut-off by the inlet isolation valve when the throttle is relaxed or when the ignition is switched off, so as soon as the driver backs-off the oil supply is cut-off.

Oil from the primary turbo can cause runaway as its air intake isn't permanently closed-off when the throttle is relaxed or the ignition is switched off, which is why I installed a system to hold the EGR butterfly closed for 15 seconds after the ignition is switched off.

Last edited by GraemeS on 5th Jul 2023 8:37pm. Edited 1 time in total

The smoking issue with these engines is to do the drain system which won’t cause a runaway engine. 2012 TDV8 Vogue (L322)

Turbocharger Oil Return
Due to the wide range of inclination in which the vehicle can operate, the geometry of the sump has been configured to
guarantee oil pick-up across all operating angles. Land Rover have developed an oil-scavenge system to guarantee excellent
oil flow through the turbochargers on severe side-slopes.
At extreme angles, there is a risk that the turbochargers may be below the oil level on the sump, restricting oil return flow. To
overcome this, the engine uses a rotor type, oil scavenge pump located on the front of the vacuum pump, to help draw oil
back from the turbochargers to guarantee good oil flow across the full range of operating angles.
The oil return from each of the turbochargers is routed by pipes to a small reservoir which is integral with the sump. The oil
scavenge pump, which is integral with the vacuum pump, draws oils from this reservoir via a dedicated scavenge pipe and
deposits it into the RH cylinder head, via the pump vacuum pump body, where it drains back to the main part of the sump.
This ensures that the oil drain from each turbocharger is free to drain oil into the reservoir regardless of the vehicle attitude.

From the engine description page.

I am partially convinced smoke level from the second turbo is linked to particular engine oils (normally my view would be engine oil is engine oil and it makes no difference).

Another member said they use Shell Helix in both their 4.4 TDV8s and don't get the smoke.

I now use Petronas 5000 FJ and I seldom see smoke from the 2nd turbo.

When I used the Valvoline, it was a regular occurrence.

I know a variety of factors can impact frequency of it occurring, but it would be good to see if any other members use either of these oils and can attest / contest. 2015 Range Rover Autobiography 4.4 SDV8

As I said earlier Gary, this is the first time I've used another oil other than Shell Helix AF-L.
I compared the Smith and Allan oil with some Shell I had left and the Shell seems thicker, more gloopy with the final drips out my filling jug.
Confusing when the handbook says Shell Helix but the oil cap says Castrol on it.
Someone else has mentioned that the S&A isn't totally fully synthetic when they claim it is.
Towing the caravan in 10 days so I'll see what happens.

I dont think its depending of oil make.
JLR say: ineffective oil drainage system.
What does it mean? It mean the aux. oil pump are not able to pump the oil out from the aux. oil sump. The pump pumping oil well untill it get air. Due pump location is too high, its not able to make enough vacuum to rise the oil up to the pump. When pump get air its not pumping oil anymore on low RPM, until RPM rise higher. In winter there is higher idle RPM and the system working more properly. In the sommer too low RPM cause the aux. sump get full off oil and no oil drain from turbos.
So simple it is.
JLR make drain mode, but it not solve the problem compleatly. They need to make right turbo drain mode as well in this case, but they didnt. And other thing, this simple solution eliminate double-sump system compleatly, you can`t go to the step slope anymore (well, 99% of RR-s dont do it anyway), especially to the left side.
They should modify aux. oil pump and leave the system like it is. But it seems its impossible, mush cheaper is just drill the hole and send oil drain to the main sump. Well, not the best solution in my opinion.

Maybe try a 5W40 grade of oil in summer  2012 TDV8 Vogue (L322)

kevinp wrote:

As I said earlier Gary, this is the first time I've used another oil other than Shell Helix AF-L.
I compared the Smith and Allan oil with some Shell I had left and the Shell seems thicker, more gloopy with the final drips out my filling jug.
Confusing when the handbook says Shell Helix but the oil cap says Castrol on it.
Someone else has mentioned that the S&A isn't totally fully synthetic when they claim it is.
Towing the caravan in 10 days so I'll see what happens.

Will be good to find out. Keep us updated and enjoy the caravanning  2015 Range Rover Autobiography 4.4 SDV8

kevinp wrote:

As I said earlier Gary, this is the first time I've used another oil other than Shell Helix AF-L.
I compared the Smith and Allan oil with some Shell I had left and the Shell seems thicker, more gloopy with the final drips out my filling jug.
Confusing when the handbook says Shell Helix but the oil cap says Castrol on it.
Someone else has mentioned that the S&A isn't totally fully synthetic when they claim it is.
Towing the caravan in 10 days so I'll see what happens.

jaguar3 wrote:

JLR make drain mode, but it not solve the problem compleatly. They need to make right turbo drain mode as well in this case, but they didnt. .