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#4567438 - 11/08/17 06:32 AM 2017 Cadillac ATS 2.0T AWD - PCV modifications?
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

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#4567506 - 11/08/17 08:34 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors]
PimTac Offline


Registered: 03/04/17
Posts: 4342
Loc: 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


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#4567515 - 11/08/17 08:39 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 11970
Loc: 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.


Edited by ARCOgraphite (11/08/17 08:40 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

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#4567525 - 11/08/17 08:49 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors]
WobblyElvis Offline


Registered: 09/23/14
Posts: 1355
Loc: Toronto Canada
Where is the evidence that a problem exists? I say, leave it alone.

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#4567531 - 11/08/17 08:53 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: 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.




Edited by StevieC (11/08/17 08:54 AM)
_________________________
'15 Dodge Journey - 90,000 KM's - SSO 5w20
'06 Hyundai Santa Fe - 535,000km - SSO 0w30 (R.I.P)

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#4567542 - 11/08/17 09:07 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors]
Trav Offline


Registered: 11/20/06
Posts: 18909
Loc: 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.

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#4567545 - 11/08/17 09:09 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: WobblyElvis]
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

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#4567548 - 11/08/17 09:13 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: Trav]
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

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#4567551 - 11/08/17 09:15 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: StevieC]
GMBoy Offline


Registered: 11/22/04
Posts: 7705
Loc: 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.

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#4567555 - 11/08/17 09:18 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors]
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

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#4567569 - 11/08/17 09:32 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: GMBoy]
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

Top
#4567571 - 11/08/17 09:33 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: GMBoy]
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

Top
#4567573 - 11/08/17 09:33 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: webfors]
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

Top
#4567579 - 11/08/17 09:38 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: GMBoy]
webfors Offline


Registered: 06/06/06
Posts: 4944
Loc: 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 5w30, Fram DL11665
15 DL650, Valvoline 20w50, KN-138
Small engines; RT5 10w30

Top
#4567682 - 11/08/17 10:59 AM Re: 2017 Cadillac ATS 2.0T AWD - PCV modifications? [Re: StevieC]
The Critic Offline


Registered: 08/30/04
Posts: 19811
Loc: 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 - 168k - ServicePro Dexos 0W-20
2007 Honda Accord 2.4 - 128K - Idemitsu 5W-20

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