AMSOIL ASL 5w-30, 5K 2012 Cruze

Messages
2,037
Location
North Carolina
Looks like something is has let go or letting go inside, cam phasers or timing chain. Now to see if I can get anything done at the dealer about this. AC Delco oil filter was used on the second oil change, Wix before that.
Code:
OIL            		     ASL 5w-30       ASL 5w-30
MILES IN USE    	     5,712           7,169
MILES           	     16,045          10,333
SAMPLE TAKEN    	     7/28/14         12/25/13

Spectorscopic Analysis (ppm) ASTM D5185 Mod    

Iron           			 282		41
Copper				 3		4
Lead				 0		0
Aluminum			 11		15
Tin				 0		0
Nickel				 0		0
Chromium			 0		0
Titanium			 0		0
Vanadium			 0		0
Silver				 0		0
Silicon				 10		13
Boron				 137		72
Calcium				 3505		3127
Magnesium			 16		18
Phosphorus			 649		592
Zinc				 743		781
Barium		 		 0		0
Molybdenum			 122		46
Sodium				 13		10
Potassium			 0		0

Physical Properties

Viscosity @ 40C ASTM D 445 Mod	 55.6		53.8
Viscosity @ 100C ASTM D 445 Mod  10.5		9.9 
Viscosity Index ASTM D 2270 *	 182		169
Base Number			 2.41		2.31
Acid Number ASTM D 974		 3.23		2.95

IR (Indexing Numbers) JOAP Method

Oxidation			 76		83
Nitration			 14		18
Antiwear			 22		22
Sulfation			 67		73
Glycol				 0		0
Soot (%)			 0.0		0.0

Single Component Test

Water ppm			 340  (c)       770  (c)
Fuel Dilution % By GC*		 2.0		2.5
    
 
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OVERKILL

$100 Site Donor 2021
Messages
46,056
Location
Ontario, Canada
Sweet baby Jesus that's a lot of iron!!!! Now THAT is a good use of a UOA, looks like you have discovered a legitimate mechanical issue with the engine thumbsup
 
Messages
10,008
Location
Upstate NY
Originally Posted By: 901Memphis
Amsoil doesn't meet the Dexos spec, hopefully the dealership doesn't give you any trouble. Is 7000 miles within oil life monitor range? Seems long for the engine.
7000 miles is fine for this engine. I run 7500 mile intervals in my Cruze's 1.4T. Also, the OLM in the 2011-2013 Cruzes is optimistic by about 25%. GM changed that sometime in the later 2013's and for the 2014's. When mine reads 25% it's time to change the oil. Let us know what is the matter with the engine once something breaks.
 
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Messages
8,306
Location
Grand Rapids, MI
Whoa! Those are some crazy wear numbers. Have you noticed anything odd about the way the engine has been running/performing/sounding? Perhaps some sort of lab error...?
 
Messages
2,995
Location
Cedarbrae, Ontario
Originally Posted By: Ram01
Save your money switch to QSUD A nice quality oil
I don't think that would make any difference. If something is letting go, it will do it regardless what oil is being used.
 

Rat407

Thread starter
Messages
2,037
Location
North Carolina
I'm going to get all the info I can together and then see the dealer. I'll do my best to keep updates as they come in. I have a friend that works at a Chevy dealership, he hasn't seen any issues where the engine had problems to be needing replaced but he is going to ask around on his network of friends to see if anything is out there. I'm going to resample at 2k miles and see what it shows.
 
Messages
753
Location
MA
Is the car/engine symptomatic? Have you noticed anything out of the ordinary aside from the UOA? If not, I doubt the dealership will give you much love. They will want a symptom that can be, "repeated".
 
Messages
225
Location
Los Angeles,CA
im wondering if the WIX filter fell apart- and possibly clogged stuff.. leading to increase wear due to oil starvation? Any noise? I dont know if the Cruze was part of the bulletin that GM had on vehicles coming in with engine noise-- they were to check for aftermarket filters.
 
Messages
1,459
Location
NY
^It's a cartridge filter so (assuming the OP did it himself, which it sounds like the case) he would see any damage to the filter right away.
 
Messages
6,331
Location
KY
Anyone want to bet that the dealer discounts the UOA completely using a 100% bogus rationale?
 
Messages
3,557
Location
Massachusetts
Originally Posted By: MCompact
Anyone want to bet that the dealer discounts the UOA completely using a 100% bogus rationale?
It's not that they'll discount the UOA but they need a symptom to diagnose a problem. If the engine runs fine they're not going to just go tear down the block and start looking for a problem. No good mechanic will go in blindly looking for a problem. They'll need to trouble shoot first and find a problem.
 
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