Bentley Turbo Oil Screen

[daf290]

My 2014 Bentley V8 has a known issue with the oil screen feeding the turbos clogging and taking out the turbos.
This is an Audi engine and Audi did a warranty repair but not Bentley.
I was planning to use engine flush prior to draining the oil for this and future oil changesthinking that would help keep the screen clean, but the more I think about it, maybe the engine flush would loosen material and make the issue worse. My flush is Liqui Moly brand,
43k miles on the car
What should I do?

 

[JavierH19]

Nice Continental GT, always loved the styling. I was gonna say welcome since it's your first post but noticed you joined in 2009

A slow cleaning is always good but I'd try to run a snake cam into the valve cover and also the drain bolt to see how it is.

What were the intervals? If they were conservative as they should be since it's foolish to risk it with long intervals then you're likely fine. The filter screen clogging may have been related to long intervals which were popular with euro cars at the time and stuff like that has happened to other brands with rings clogging or chains stretching but those that changed earlier than suggested avoided these issues or had little maleffect.

 

[loneryder]

I recently saw a Bentley suv in Fl. In what I call millionaires row in the panhandle, I saw G Wagons everyday. Parked by a $190k AMG G wagon. Incomprehensible money down there.

 

[dnewton3]

To me, it would be beneficial to know what is clogging the turbo oil supply screens.

No lubricant whatsoever is going to stop particulate from blinding off a screen. So if it's particles of metal or other form like silica, it's moot.

However, if it's sludge related, then a high quality lube like Amsoil SS, HPL or even Valvoline R&P could help clean this up a bit, and even prevent it from happening again with regular use and normal OCIs.

I would not advise the use of quick-use solvents. Whatever they may loosen would just end potentially sending more chunks of stuff to those screens again.


And BTW ... 1 post in 16 years? That's a new record of restraint!

 

[BMWTurboDzl]

I'm of the opinion that the LiquiMoly product will dissolve gelatinous sludge but do nothing for hard deposits which would need a lot of time to dissolve. It's only a quick idle for 10-15 mins. In addition, if you've been running on a short OCI then there should be nothing to clog the turbo oil feed lines anyways.

If this were my car I'd run Amsoil, M1, HPL, Redline, Pennzoil Euro and not worry about it. It would be interesting to know the type of material clogging the oil feed lines. Is it carbon or excess sealant from elsewhere?

 

[Jetronic]

fit bolts without the screen

 

[twX]

Subarus used to have this problem. They started recommending regular inspections of the screens. Many people just removed them instead. When Subaru updated their engines, they stopped using the oil screens altogether.

Presumably the screens were put there because there was a concern that the oil passages in the turbo could clog up even more quickly if a screen wasn't used. In practice, the screens may have made things worse.

I wouldn't worry too much about removing the screens. A good oil filter that isn't clogged and bypassing should prevent anything large enough to clog the screens from getting to them, and deposits shouldn't really be building up in the oil passages downstream of the oil filter.

I'd just use a good filter and change the oil and filter often enough to keep the engine clean. If you've already been doing this, great. If not, you might want to inspect the screens. If they're pretty clogged up, inspect the turbos for shaft play. I wouldn't do a flush.