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Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 233K #4693657
03/13/18 03:50 PM
03/13/18 03:50 PM
Joined: Aug 2011
Posts: 252
Texas
dhellman12 Offline OP
dhellman12  Offline OP
Joined: Aug 2011
Posts: 252
Texas
Oil was changed at the time of the sample. For the blackstone questions below.

Does the user this engine sees change significantly from sample to sample? No. Daily driver for the wife. Maybe more highway trips during the holiday season (Nov / Dec), but nothing else I can think of.

Hopefully this engine is running well with no unusual knocking noises or low oil pressure readings. No knocking noise, and no change in oil pressure. Still reads very strong.


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    9,088		9,129		9,213		10,045		9,037		9,246		
MILES ON UNIT   233,194		224,106		214,977		205,764		195,719		186,682		
SAMPLE TAKEN    2/24/18		7/14/17		1/2/17		7/15/16		12/14/15	6/29/15		
MAKE UP OIL	0.5		0.5		0		0		0		0		

ALUMINUM	6		4		3		4		3		4		
CHROMIUM	1		0		1		1		0		0		
IRON		18		13		12		15		11		12		
COPPER		14		11		13		11		12		10		
LEAD		10		24		11		22		13		30		
TIN		1		0		0		0		0		5		
MOLYBDENUM	168		141		138		130		143		160		
NICKEL		1		1		1		1		2		1		
MANGANESE	0		0		0		0		1		0		
SILVER		0		0		0		0		0		0		
TITANIUM	0		0		0		0		0		0		
POTASSIUM	2		2		1		2		4		4		
BORON		61		53		39		42		36		61		
SILICON		37		29		28		30		35		28		
SODIUM		10		9		9		11		10		9		
CALCIUM		3168		3039		3191		2928		3570		3461		
MAGNESIUM	127		13		13		13		17		14		
PHOSPHORUS	778		558		648		558		655		627		
ZINC		825		661		748		628		773		800		
BARIUM		0		0		0		0		0		0	

SUS @ 210F	65.9		64.4		63.8		68.8		66.0		62.6		
Visc @ 100C	11.86		11.45		11.29		12.64		11.88		10.94		
Flashpoint	450		445		445		400		410		420		
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 %	0.3		0.2		0.4		0.5		0.3		0.2		
TBN		3.0		3.1		3.0		2.2		3.3		3.3


Blackstone Inc Comments:
This trend in lead is awfully strange, but at least we're on the lower side of it this time. Does the user this engine sees change significantly from sample to sample? If so, maybe the up and down trend in bearing wear is partly due to that. It's certainly not a normal trend, but it is predictable and therefore hard to call a problem. Hopefully this engine is running well with no unusual knocking noises or low oil pressure readings. The TBN is fine and the slightly thick viscosity is not a problem. Check back in 10-11K miles on the oil.


05 Kawasaki BF750 - 277hrs
12 Jeep 3.8L - Amsoil ASL 5w30 68K
04 DMax 6.6L - Amsoil AME 15w40 230K
00 WS6 5.7L - Amsoil ASL 5w30 254K
Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 233K [Re: dhellman12] #4693711
03/13/18 04:42 PM
03/13/18 04:42 PM
Joined: Jan 2009
Posts: 14,046
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 14,046
Illinois
Why 9K OCIs?


2007 Ford Fusion 236,000 miles
M1 0-20 EP
2017 Ford Fusion 62K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 233K [Re: dhellman12] #4693722
03/13/18 04:52 PM
03/13/18 04:52 PM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline
Joined: Jul 2017
Posts: 542
Texas (south)
I wouldn't run a Chevy for anything more than 5,000 Miles.

Try going up to 10,000 next sample and see how changed it is.


Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 233K [Re: tig1] #4694095
03/13/18 09:52 PM
03/13/18 09:52 PM
Joined: Oct 2010
Posts: 5,453
Florida
Artem Offline
Artem  Offline
Joined: Oct 2010
Posts: 5,453
Florida
Originally Posted By: tig1
Why 9K OCIs?


Yea, why 9k? Seems like such a random number.


2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart. (thanks Advance Auto Parts for the awesome deal)
Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 233K [Re: dhellman12] #4694111
03/13/18 10:24 PM
03/13/18 10:24 PM
Joined: Aug 2011
Posts: 252
Texas
dhellman12 Offline OP
dhellman12  Offline OP
Joined: Aug 2011
Posts: 252
Texas
Lead spikes every other OCI. Until those come down Iíve been following the Blackstone recommendations of no more than 9K. Based on this last one it looks like they now are ok pushing it to 10-11K.


05 Kawasaki BF750 - 277hrs
12 Jeep 3.8L - Amsoil ASL 5w30 68K
04 DMax 6.6L - Amsoil AME 15w40 230K
00 WS6 5.7L - Amsoil ASL 5w30 254K
Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 233K [Re: dhellman12] #4694115
03/13/18 10:29 PM
03/13/18 10:29 PM
Joined: Apr 2007
Posts: 3,096
WI.
dblshock Offline
dblshock  Offline
Joined: Apr 2007
Posts: 3,096
WI.
that's long for W-30


16 Civic Coupe Touring 38k
640:1 TCW-3 E091
Edge 0/40 XG7317
Firehawk Indy 500

06 4Runner SR5 146k
640:1 TCW-3
PP 5/30 XG3614
Falken Wildpeak AT3W
Re: Amsoil ASL 5w30, 9K, 04 Chevy Tahoe, 233K [Re: dhellman12] #4694182
03/14/18 01:55 AM
03/14/18 01:55 AM
Joined: Sep 2015
Posts: 2,531
Malaysia
zeng Offline
zeng  Offline
Joined: Sep 2015
Posts: 2,531
Malaysia
Originally Posted By: dhellman12
Lead spikes every other OCI. Until those come down Iíve been following the Blackstone recommendations of no more than 9K. Based on this last one it looks like they now are ok pushing it to 10-11K.

9K OCI is giving you very low metal wear rates in Fe, Cu.
Residual KV100C and TBN reads good, I would concur with BStone extending OCI further as suggested as I see this Amsoil can do more.


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