Recent Topics
My Ford orange turned pink
by BeerCan
06/21/18 12:45 PM
Any plants/garden experts?
by maverickfhs
06/21/18 12:43 PM
Internet Sales Tax O.K.ed by Supreme Court
by doitmyself
06/21/18 12:23 PM
Brake fluid for a '03 Volvo S60
by earthworm
06/21/18 11:22 AM
Oil Weight Change - Mid Production Cycle
by PolarisX
06/21/18 11:20 AM
Kia ATF - OEM, Eneos, Maxlife - TDS - DIFFERENT!
by Spddm0n
06/21/18 11:19 AM
Dillon Precision Is Simply The Best!
by 2015_PSD
06/21/18 11:17 AM
First OCI - 156k miles Prius
by Greg L
06/21/18 11:11 AM
Brake Squeal on Rear Discs
by BlitzPuppet
06/21/18 11:10 AM
Coolant leak.
by LeakySeals
06/21/18 11:05 AM
Looking for a Home Depot coupon 10% off?
by GravelRoad
06/21/18 10:59 AM
Which is more important for low wear HTHS or ZDDP?
by Building3
06/21/18 10:40 AM
Valvoline DuraBlend 80W-90
by dogememe
06/21/18 10:34 AM
Lifter Tick
by Delta
06/21/18 10:28 AM
I Got Locked Up Today
by Zee09
06/21/18 10:24 AM
GM new 2.7 turbo pick up motor
by ZZman
06/21/18 09:45 AM
PUP at Canadian Tire $33 CAN
by Snagglefoot
06/21/18 09:15 AM
How to use up a case of SF?
by atikovi
06/21/18 09:08 AM
Read The Fine Print- Credit Cards
by Zee09
06/21/18 09:06 AM
Employer Exit Interview.
by JustinH
06/21/18 08:53 AM
Newest Members
wil892, Spddm0n, ronw1309, Suth31, yamahaboy125
65286 Registered Users
Who's Online
102 registered (badtlc, atikovi, aquariuscsm, ammolab, 14Accent, 12 invisible), 1558 Guests and 58 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65286 Members
67 Forums
285710 Topics
4768278 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4479145 - 08/04/17 04:45 PM Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K
dhellman12 Offline


Registered: 08/29/11
Posts: 239
Loc: Texas

Oil was changed at the time of sample. Cold air intake was installed at 216K miles that replaced the entire air intake assembly, including the MAF. Good news was that I haven't had any more MAF codes trip, but bad news is that it seems to have made no difference at all in silicon levels. Also sounds like with the streaks of lead, the engine may be getting ready to throw a bearing...

Make/Model: GM 5.3L V-8
Vehicle: 2004 Chevy Tahoe

Code:
OIL             Ams ASL		Ams ASL		Ams ASL		Ams ASL		Ams ASL		Ams ASL		
MILES IN USE    9,129		9,213		10,045		9,037		9,246		8,124		
MILES ON UNIT   224,106		214,977		205,764		195,719		186,682		177,436		
SAMPLE TAKEN    7/14/17		1/2/17		7/15/16		12/14/15	6/29/15		11/30/14	
MAKE UP OIL	0.5		0		0		0		0		0		

ALUMINUM	4		3		4		3		4		3		
CHROMIUM	0		1		1		0		0		0		
IRON		13		12		15		11		12		9		
COPPER		11		13		11		12		10		12		
LEAD		24		11		22		13		30		7		
TIN		0		0		0		0		5		0		
MOLYBDENUM	141		138		130		143		160		144		
NICKEL		1		1		1		2		1		0		
MANGANESE	0		0		0		1		0		0		
SILVER		0		0		0		0		0		0		
TITANIUM	0		0		0		0		0		0		
POTASSIUM	2		1		2		4		4		0		
BORON		53		39		42		36		61		45		
SILICON		29		28		30		35		28		31		
SODIUM		9		9		11		10		9		9		
CALCIUM		3039		3191		2928		3570		3461		3247		
MAGNESIUM	13		13		13		17		14		12		
PHOSPHORUS	558		648		558		655		627		702		
ZINC		661		748		628		773		800		801		
BARIUM		0		0		0		0		0		0		

SUS @ 210F	64.4		63.8		68.8		66.0		62.6		64.6		
Visc @ 100C	11.45		11.29		12.64		11.88		10.94		11.51		
Flashpoint	445		445		400		410		420		430		
Fuel %		<0.5		<0.5		<0.5		<0.5		<0.5		<0.5		
Antifreeze %	0.0		0.0		0.0		0.0		0.0		0.0		
Water %		0.0		0.0		0.0		0.0		0.0		0.0		
Insolubles %	0.2		0.4		0.5		0.3		0.2		0.4		
TBN		3.1		3.0		2.2		3.3		3.3		3.1		



Blackstone Inc Comments:
Lead is back up in this report and in the past, we've attributed that to particle streaks here and there. That might be true, but looking at the overall trend, we could be seeing excess bearing wear. We typically see steady wear from healthy engines, so erratic trends can indicate trouble. We aren't ready to make that call here, especially since other metals look great, but lead is certainly something to watch. Monitor oil pressure in case it starts reading lower than usual. The thick viscosity is fine and the TBN was strong, but stay under 10K miles for now and check back.
_________________________
05 Kawasaki BF750 - 262hrs
04DMax 6.6L - Amsoil AME 15w40 222K
04Tahoe 5.3L - Amsoil ASL 5w30 235K
00WS6 5.7L - Amsoil ASL 5w30 253K

Top
#4479148 - 08/04/17 04:50 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
TheKracken Offline


Registered: 04/18/17
Posts: 515
Loc: Fort Worth TX
How do you like your Tahoe? I am a big toyota guy and love my truck but being a dad here in a month is making me want a dad vehicle....the 4 runners used cost too much but the tahoe seems nice.
_________________________
2011 Prius 96k miles RLI 5w20
97 Toy T100 4x4: amsoil 0w20 242k Miles
04 Toy Sienna awd: Pennzoil 0w20 281k Miles

Top
#4479186 - 08/04/17 05:42 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
Donald Offline


Registered: 03/21/04
Posts: 20456
Loc: Upstate NY
With copper and lead somewhat high, there is likely a bearing problem. You have gotten over 200k from the engine and probably can go more.

When looking for air leaks, look beyond the normal stuff. But wait for another oil change before you say the replacement of the air intake did not help lower the silicon.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


Top
#4479216 - 08/04/17 06:28 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
Donald Offline


Registered: 03/21/04
Posts: 20456
Loc: Upstate NY
What kind of air filter are you using.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


Top
#4479426 - 08/04/17 10:23 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
Ammofirst Offline


Registered: 06/22/17
Posts: 353
Loc: Western usa
Would running oil high in moly help any ?

Top
#4479471 - 08/05/17 12:13 AM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Honestly.... I'd try an inexpensive 15W-40 HDEO and see if that helps.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
#4479526 - 08/05/17 03:12 AM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
ltslimjim Offline


Registered: 08/06/10
Posts: 5641
Loc: WatUpDoc
Improve air filtration if at all possible as a step 1 as others have said.

Your's isn't the flex fuel 5.3 is it?

This ACDelco A3181C Professional air filter looks like the best option for your stock replacement:

https://www.amazon.com/ACDelco-A3181C-Professional-Air-Filter/dp/B00PM374FO

It's made in the USA compared to several China outsourced. However, Fram may be a decent alternative to the AC Delco such as this model CA8755A. I don't know the efficiency ratings on these, but would definitely make sure your intake is sealed with no leaks.
_________________________
92 Civic Hatch (stolen frown RIP)
07 Honda Fit Sport (A/T) WELCOME thumbsup

Top
#4479574 - 08/05/17 06:25 AM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: Ammofirst]
krismoriah72 Offline


Registered: 02/16/09
Posts: 1518
Loc: wv
Originally Posted By: Ammofirst
Would running oil high in moly help any ?


That oil he is using looks very high in moly to me.

I have an 03 Suburban with the same engine and almost the same miles.. im running Shell 5w40 in mine.

Top
#4479694 - 08/05/17 09:18 AM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
dhellman12 Offline


Registered: 08/29/11
Posts: 239
Loc: Texas
I can assure you it's not the air filter. I've replaced the stock air box, tried K&N, Wix, and Amsoil air filters. And on this most recent I replaced the MAF and installed a specter cold air intake which replaces all OEM tubing up to the throttle body. I really expected to see a big reduction in silicon on this run...

Any downside to trying a heavier oil?
_________________________
05 Kawasaki BF750 - 262hrs
04DMax 6.6L - Amsoil AME 15w40 222K
04Tahoe 5.3L - Amsoil ASL 5w30 235K
00WS6 5.7L - Amsoil ASL 5w30 253K

Top
#4479695 - 08/05/17 09:22 AM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: ltslimjim]
dhellman12 Offline


Registered: 08/29/11
Posts: 239
Loc: Texas
Yes, this is the flex fuel motor. Have not run E85 since owning the vehicle (bought at 119K miles)
_________________________
05 Kawasaki BF750 - 262hrs
04DMax 6.6L - Amsoil AME 15w40 222K
04Tahoe 5.3L - Amsoil ASL 5w30 235K
00WS6 5.7L - Amsoil ASL 5w30 253K

Top
#4479951 - 08/05/17 01:48 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
ltslimjim Offline


Registered: 08/06/10
Posts: 5641
Loc: WatUpDoc
Afaik, the only downside to going up to 40 grade is worse MPG. You may consider installing a pre-filter dust wrap or getting a filter that includes one.
_________________________
92 Civic Hatch (stolen frown RIP)
07 Honda Fit Sport (A/T) WELCOME thumbsup

Top
#4480001 - 08/05/17 02:57 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
ltslimjim Offline


Registered: 08/06/10
Posts: 5641
Loc: WatUpDoc
For example, aFe has a Pro Guard 7 filter that is oiled but seems pretty hefty. I know some K&N cone filters come with matching pre-filter wraps.

http://afepower.com/stock-replacement-and-universal-performance-air-filters

Otherwise could you make your own pre-wrap that is water repellent? That's the nice thing about pre-wraps.

IMO, whatever it takes to sanely reduce Si readings and perhaps trying a 40 grade for a couple OCI is the best recommendations going forward. You could try anything from M1 0w40 since it's sold in gal at WM now or something like Rotella 10w30 since as an HDEO alternative or the M1 5w40 HDEO.
_________________________
92 Civic Hatch (stolen frown RIP)
07 Honda Fit Sport (A/T) WELCOME thumbsup

Top
#4480022 - 08/05/17 03:20 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: ltslimjim]
dhellman12 Offline


Registered: 08/29/11
Posts: 239
Loc: Texas
Considering si hasn't changed with 4 different filter brands, and completely replacing the air intake system, I don't think that's where it would be coming from. Any other suggestions where it could be getting in at?
_________________________
05 Kawasaki BF750 - 262hrs
04DMax 6.6L - Amsoil AME 15w40 222K
04Tahoe 5.3L - Amsoil ASL 5w30 235K
00WS6 5.7L - Amsoil ASL 5w30 253K

Top
#4480182 - 08/05/17 07:58 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
addyguy Offline


Registered: 09/08/05
Posts: 14288
Loc: Canada
With this continuing problem with what appears to be bearing wear, I'm surprised you haven't tried a heavier oil.

Being an Amsoil guy, I'd get some XL 10W-40 in there for a 7-8k run and see how it does if I were you!
_________________________
2010 Kia Soul 2U - 2.0L I-4, auto; 126k miles.
M1 EP 10W-30; OEM Kia filter.

Top
#4480214 - 08/05/17 08:39 PM Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 224K [Re: dhellman12]
zeng Offline


Registered: 09/01/15
Posts: 2188
Loc: Malaysia
I'm not sure if Silicon here is part of road dirt ...... it's normal here , I suppose.

Top
Page 1 of 2 1 2 >