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#4474221 - 07/29/17 10:32 PM 16' Lacrosse GM 3.6 VVT DI Oil thoughts
TX_1821 Offline


Registered: 05/25/17
Posts: 69
Loc: Arlen Texas..... (Houston)
Hello yall!!!

Recently picked up a pre-owned lacrosse with 30k miles.
Important Info:
Vehicle History: Carfax had OCI as 7500 miles (Assuming it's accurate)
Goal: Keep car for +100k miles

I came to understand that these DI engines are quite hard on even the most robust oil. (from reading past threads on here, quite informative)
Think it was fuel dilution being a main concern, leading most users here to simply do more frequent OCI's.
I'm pretty sure this engine is the exact same one that is in the Impala, Traverse, XTS, pretty much most of GM v6's.

Anyways I'm thinking about running this setup & seeing how it goes
-4K mile OCI
-Penzoil Conventional Yellow Bottle 5w-30 (Easily available & $20/6 quarts)
-Fram Ultra oil filter
-Getting a BlackStone analysis done to see exactly where I'm at.





Any thoughts, concerns, comments, suggestions, ideas, random info is greatly appreciated Cheers2
_________________________
Computers don't make mistakes...What they do they do on purpose"
-Dale Gribble

16' Lacrosse 3.6 LFX
Oil: QSUD 5w30 & Fram Ultra
ATF: Valvoline Dex 6

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#4474227 - 07/29/17 10:41 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
userfriendly Offline


Registered: 06/03/03
Posts: 2630
Loc: LaFinDuMonde
If you are going conventional, consider 10W30 instead of 5W30. My pick given your climate would be a 10W30 synthetic.

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#4474230 - 07/29/17 10:45 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2569
Loc: MN
Use a dexos1 oil to maintain the warranty. Using a full synthetic version, the best you can do is fighting the chain wear in these things by using Mobil1 Extended Performance 5w30 or Castrol Edge Extended Performance 5w30, and a Fram Ultra oil filter. Then let the OLM figure out exactly how far to go. Those oils are better than what the OLM expects to have in the sump, allowing you to follow the OLM precisely and still have a comfort margin.


Edited by oil_film_movies (07/29/17 10:51 PM)

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#4474234 - 07/29/17 10:50 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
addyguy Offline


Registered: 09/08/05
Posts: 14288
Loc: Canada
DO NOT USE CONVENTIONAL OIL.

Car calls for a Dexos oil, these are at minimum a syn blend; most are full-syn.

I do agree with keeping changes short and not using the OLM.
_________________________
2010 Kia Soul 2U - 2.0L I-4, auto; 126k miles.
M1 EP 10W-30; OEM Kia filter.

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#4474237 - 07/29/17 10:52 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
novadude Offline


Registered: 01/16/03
Posts: 1469
Loc: Shippensburg, PA
Enjoy the car. My wife loves her 2016 LaCrosse.

I am currently using Castro magnatec 5W-30 (Dexos 1), and a AC Deloc PF63 filter. Never did oil analysis, so I can't say whether this is good or bad. It's certainly not causing any problems. I was using Mobil 1 prior to this last OCI. I change it with 25% left on the OLM, which usually ends up being 5-6k miles.

If you grab a jug at Walmart, don't forget the extra quart, as this car has a 6 quart capacity.


Edited by novadude (07/29/17 10:55 PM)

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#4474240 - 07/29/17 10:53 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: addyguy]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2569
Loc: MN
Originally Posted By: addyguy
I do agree with keeping changes short and not using the OLM.

GM lowered the oil change interval back in 2011 on these. They have been aware of it for a long time now. The OLM has this information and is already programmed to be correct. Old problem at GM.

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#4474247 - 07/29/17 10:57 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
Dorian Offline


Registered: 12/07/15
Posts: 303
Loc: Ohio
My grandparents had a 2010 LaCrosse that they had to get rid of at 170K due to a timing chain failure. All oil changes were done with M1 5W30 and religiously around 5K OCIs. Hopefully they have resolved these issues. I felt like that car never ran correctly. It always felt gutless. Although, their 2016 does as well until you are well into the throttle.
_________________________
99 Camry 5S M1 AFE 0W30 194K
14.5 Camry SE 2AR 0W20 M1 AFE 36K (Mom's)
98 Chevy Prizm 1ZZ M1 AFE 0W30 146K (Brother's)

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#4474257 - 07/29/17 11:07 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: addyguy]
Vuflanovsky Offline


Registered: 12/15/14
Posts: 1168
Loc: California
Originally Posted By: addyguy
DO NOT USE CONVENTIONAL OIL.

Car calls for a Dexos oil, these are at minimum a syn blend; most are full-syn.

I do agree with keeping changes short and not using the OLM.



+1

I would definitely reconsider using PYB and use a Dexos full synthetic of your choice.

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#4474259 - 07/29/17 11:13 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
Ammofirst Offline


Registered: 06/22/17
Posts: 353
Loc: Western usa
Nice car. We've owned a couple of GM 3.6 V-6 engines. Use dexos approved full synthetic, you can get Magnatec for $18.00 5qt jug. I would NOT follow the OLM in this application. Run full synthetic oil : change it every 5k. : Fram ultra filter. Btw GM has manufactured numerous versions of this engine. Your V-6 is the LFX version, which is actually less prone to chain issues. But don't press your luck, stick with full synthetic Every 5k. Here's the breakdown on GM HF V-6 engines http://everything.explained.today/GM_High_Feature_engine/. Also, Your trans fluid should be easy to change on that car. 10 or 11mm bolt on bottom of trans. Piece of cake 🎂

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#4474260 - 07/29/17 11:13 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
FlyNavyP3 Offline


Registered: 07/04/16
Posts: 1407
Loc: Jacksonville, FL
There have been some stellar reports from Valvoline conventional in this engine if you scour the UOA section. That would be my pick for a conventional oil. For synthetic or a blend anything Dexos should be sufficient for 5k or whatever the OLM calls for. The UOA will shed more light when you get one.
_________________________
Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander

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#4474266 - 07/29/17 11:25 PM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
mobilaltima Offline


Registered: 02/03/11
Posts: 1150
Loc: Golden Meadow, LA
my buddy has the 3.6 LFX in a 2013 Impala with 128,xxx miles. Despite me telling him about fuel dilution with this engine and to go no longer than a 4-5k oci, he waits til the OLM hits 0%. Ive been changing it lately with Supertech Dexos 5W30 and a fram ultra. He tells me "I'm going to trust what GM says and go by the OLM and not what you say". not my problem , I just do the oil changes, I know its done right and any problems he has after is for him to deal with, he agreed on that. He hasnt had any trouble with the engine despite the long oil changes.


Edited by mobilaltima (07/29/17 11:26 PM)
_________________________
2006 2500 Dodge 5.9 Cummins Mobil Delvac 15W40, Fleetguard Stratapore 90k miles
Early '99 F250 ECLB 7.3 Stroker, 223k miles

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#4474455 - 07/30/17 08:40 AM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6177
Loc: USA
I'd use a full synthetic to the OLM's recommendations, since they have been corrected to more properly account for the DI.

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#4474509 - 07/30/17 09:49 AM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
Slick17601 Offline


Registered: 12/04/04
Posts: 1515
Loc: Pennsylvania
Pennzoil Gold synthetic blend would be a good choice as well. It's not much more than PYB and it has the necessary certifications.

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#4474540 - 07/30/17 10:17 AM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
WyrTwister Offline


Registered: 01/13/13
Posts: 1532
Loc: Texas
We bought a 2006 Lacrosse 3.8l about a month ago . It does not call for Dexos , so , dino oil and 3000 mile OCI ?

Do not know how much different there is between a 3.6l and a 3.8l .

I apologize is this amounts to hijacking the thread .

Thanks , :-)
_________________________
Wyr
God bless

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#4474551 - 07/30/17 10:23 AM Re: 16' Lacrosse GM 3.6 VVT DI Oil thoughts [Re: TX_1821]
WyrTwister Offline


Registered: 01/13/13
Posts: 1532
Loc: Texas
Bough 5 jugs of this dino oil on sale , a while back at HD . Basically $ 10 a jug ,v plus tax ..

http://www.homedepot.com/p/Formula-Shell-5W30-160-fl-oz-Motor-Oil-550022698/204999666

Thinking about using it and AC Delco filter .

thanks, :-)


Edited by WyrTwister (07/30/17 10:24 AM)
_________________________
Wyr
God bless

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