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2017 Cadillac ATS 2.0T AWD - PCV modifications? #4567438
11/08/17 07:32 AM
11/08/17 07:32 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Howdy bitog,

purchased a new 2017 ATS 2.0T AWD. Reading the Cadillac forums there is consensus that intake valve deposits will be a problem due to intake junk from recirculated oil vapor/mist.

Many owners have opted to install a catch can. With the 3 PCV system on this engine it is not trivial.

I noticed there is limited experience with this engine on Bitog. However, this issue is not unique to the LTG.

The Caddy comes with 4 years free maintenance, which means it will be getting the dealer oil changes. They use Dexos G2 syn blend. I'll have to dig if I want to know which brand of oil.

Suggestions, recommendations and feedback welcome.


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors] #4567506
11/08/17 09:34 AM
11/08/17 09:34 AM
Joined: Mar 2017
Posts: 5,452
Soviet State of Washington
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,452
Soviet State of Washington
The dealer might be using a generic oil that does meet the specs. That could change too depending on contracts. As for the catch can, will that provoke a reaction from the dealer?


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors] #4567515
11/08/17 09:39 AM
11/08/17 09:39 AM
Joined: May 2009
Posts: 12,192
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,192
N.H, U.S.A.
You don't want to lube your valve stems?

How much oil would be going in there? (should be less than a pint over an OCI)

I wouldn't go near it.

Last edited by ARCOgraphite; 11/08/17 09:40 AM.

2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors] #4567525
11/08/17 09:49 AM
11/08/17 09:49 AM
Joined: Sep 2014
Posts: 1,446
Toronto Canada
WobblyElvis Offline
WobblyElvis  Offline
Joined: Sep 2014
Posts: 1,446
Toronto Canada
Where is the evidence that a problem exists? I say, leave it alone.

Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors] #4567531
11/08/17 09:53 AM
11/08/17 09:53 AM
Joined: Aug 2008
Posts: 18,548
Ontario, Canada
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 18,548
Ontario, Canada
Save your money.

Use something like Amsoil power foam through the throttle body regularly but just before an oil change or suck up a proper cleaner through a vacuum line regularly but at oil change time and use a properly rated high quality synthetic oil in between.



Last edited by StevieC; 11/08/17 09:54 AM.

'18 Highlander - AMSOIL SS 0w20 / ATF / Severe Gear
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF (R.I.P)
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors] #4567542
11/08/17 10:07 AM
11/08/17 10:07 AM
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,921
MA, Mittelfranken.de
Catch cans are a sore point with me because by design they cant work very effectively. For every ounce it "catches" many times more gets by it. Its like catching a cup full of water out of a 10 gal bucket that spilled on the carpet and declaring it would have been worse if it didn't catch this.
It takes a oil removing coalescing filter to filter oil mist out of the air stream, an element small enough to fit under the hood would quickly be overwhelmed on a car engine.

IMO leave well enough alone and deal with whatever when it comes. I think buying an extended power train warranty on anything with a turbo or DI is a good idea.


ASE L1, Master. Deutsch Meisterbrief.
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: WobblyElvis] #4567545
11/08/17 10:09 AM
11/08/17 10:09 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Originally Posted By: WobblyElvis
Where is the evidence that a problem exists? I say, leave it alone.


http://www.cadillacforums.com/forums/cad...e-cleaning.html


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: Trav] #4567548
11/08/17 10:13 AM
11/08/17 10:13 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Originally Posted By: Trav
Catch cans are a sore point with me because by design they cant work very effectively. For every ounce it "catches" many times more gets by it. Its like catching a cup full of water out of a 10 gal bucket that spilled on the carpet and declaring it would have been worse if it didn't catch this.
It takes a oil removing coalescing filter to filter oil mist out of the air stream, an element small enough to fit under the hood would quickly be overwhelmed on a car engine.

IMO leave well enough alone and deal with whatever when it comes. I think buying an extended power train warranty on anything with a turbo or DI is a good idea.



I'm leaning towards not doing anything. My historical car purchasing habits imply that I will have this car traded before the warranty is up.

However, there are reports of the engine running rough prior to the warranty being up (as a result of carbon buildup on the intake valves), which results in some dealer <> customer wrestling. That being said, I have only seen these reports on 13' and 14' model years. Not the newer years, most likely due to low mileage.


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: StevieC] #4567551
11/08/17 10:15 AM
11/08/17 10:15 AM
Joined: Nov 2004
Posts: 7,753
Texas
GMBoy Offline
GMBoy  Offline
Joined: Nov 2004
Posts: 7,753
Texas
Originally Posted By: StevieC
Save your money.

Use something like Amsoil power foam through the throttle body regularly but just before an oil change or suck up a proper cleaner through a vacuum line regularly but at oil change time and use a properly rated high quality synthetic oil in between.




This. My CTS is direct injected. All I do is at each oil change spray a full can of intake cleaner thru with motor running. It washes past the valves and removes atleast something because gray water will come out the pipes when doing this. I'm at 147k miles and still idles smooth as glass. I think if I had a carbon problem I would feel a rough idle and perhaps some missing. Runs great just like new.

Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors] #4567555
11/08/17 10:18 AM
11/08/17 10:18 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Here's an interesting question. I asked the dealer to change the oil before delivery, since the car had a bit of mileage on it. They agreed and on the work order the part number for the oil is listed as #88865715.

I searched high and low and the only reference to that part number are service work orders found online that list this oil as 0w20!!

Does anyone have any experience with GM oil part numbers to confirm?


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: GMBoy] #4567569
11/08/17 10:32 AM
11/08/17 10:32 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Originally Posted By: GMBoy
Originally Posted By: StevieC
Save your money.

Use something like Amsoil power foam through the throttle body regularly but just before an oil change or suck up a proper cleaner through a vacuum line regularly but at oil change time and use a properly rated high quality synthetic oil in between.




This. My CTS is direct injected. All I do is at each oil change spray a full can of intake cleaner thru with motor running. It washes past the valves and removes atleast something because gray water will come out the pipes when doing this. I'm at 147k miles and still idles smooth as glass. I think if I had a carbon problem I would feel a rough idle and perhaps some missing. Runs great just like new.


146k miles!? Fantastic. Great to hear.


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: GMBoy] #4567571
11/08/17 10:33 AM
11/08/17 10:33 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Originally Posted By: GMBoy
Originally Posted By: StevieC
Save your money.

Use something like Amsoil power foam through the throttle body regularly but just before an oil change or suck up a proper cleaner through a vacuum line regularly but at oil change time and use a properly rated high quality synthetic oil in between.




This. My CTS is direct injected. All I do is at each oil change spray a full can of intake cleaner thru with motor running. It washes past the valves and removes atleast something because gray water will come out the pipes when doing this. I'm at 147k miles and still idles smooth as glass. I think if I had a carbon problem I would feel a rough idle and perhaps some missing. Runs great just like new.


Which intake cleaner? GM specific product?


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors] #4567573
11/08/17 10:33 AM
11/08/17 10:33 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Interesting link with great pictures from a gentlemen who has a lot of experience with investigating this issue:

http://www.cadillacforums.com/forums/cad...ml#post17031185


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: GMBoy] #4567579
11/08/17 10:38 AM
11/08/17 10:38 AM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline OP
webfors  Offline OP
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
Originally Posted By: GMBoy
Originally Posted By: StevieC
Save your money.

Use something like Amsoil power foam through the throttle body regularly but just before an oil change or suck up a proper cleaner through a vacuum line regularly but at oil change time and use a properly rated high quality synthetic oil in between.




This. My CTS is direct injected. All I do is at each oil change spray a full can of intake cleaner thru with motor running. It washes past the valves and removes atleast something because gray water will come out the pipes when doing this. I'm at 147k miles and still idles smooth as glass. I think if I had a carbon problem I would feel a rough idle and perhaps some missing. Runs great just like new.


Another question, what oil and filter do you use?


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: StevieC] #4567682
11/08/17 11:59 AM
11/08/17 11:59 AM
Joined: Aug 2004
Posts: 19,989
CA
The Critic Offline
The Critic  Offline
Joined: Aug 2004
Posts: 19,989
CA
Originally Posted By: StevieC
Save your money.

Use something like Amsoil power foam through the throttle body regularly but just before an oil change or suck up a proper cleaner through a vacuum line regularly but at oil change time and use a properly rated high quality synthetic oil in between.




If you have done some homework on this matter before posting, you will find that deposits on DI engines are a completely different animal than traditional deposits. These deposits are extremely heavy and are not easily removed without Walnut Blasting or manual scraping. Chemical cleaners injected thru the intake tract will “barely make a dent” on the deposits if there is a decent amount accumulated.


2011 Toyota Prius - 173k - Various 0W-20 (Brew)
2007 Honda Accord 2.4 - 131K - Mobil 1 EP HM 5W-30
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