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Amsoil 75w90, 35K, 04 Chevy Tahoe #3724438
05/08/15 08:30 PM
05/08/15 08:30 PM
Joined: Aug 2011
Posts: 256
Texas
dhellman12 Offline OP
dhellman12  Offline OP

Joined: Aug 2011
Posts: 256
Texas
Make/Model: GM Differential
Vehicle: 2004 Chevrolet Tahoe
Fluid was changed and refilled with same type. Will likely try to get another 10K out of the next fill.

Blackstone comments:
This sample is looking pretty good. Wear metals are holding quite steady compared to last time, and that's nice to see, but it's especially nice on a longer oil run. Iron is below average on a longer-than-average oil run, and that's great. It's especially reassuring after that high reading you had in your first sample. Maybe that was just caused by a really long oil run or something operational/situational. The silicon is probably from sealers and that's nothing to be concerned about. Insolubles are low and the TAN is fine. No serious problems here.

Code:
OIL             Amsoil 75w90	Amsoil 75w90	Unknown
MILES IN USE    35,159		25,128		Unknown
MILES ON UNIT   183K		148K		123K
SAMPLE TAKEN    4/16/15		3/18/13		5/3/11		
MAKE UP OIL	0		0		0		

ALUMINUM	2		3		4		
CHROMIUM	1		1		2		
IRON		264		255		672		
COPPER		5		7		28		
LEAD		0		0		1		
TIN		0		0		0		
MOLYBDENUM	1		0		3		
NICKEL		4		4		11		
MANGANESE	6		6		26		
SILVER		0		0		0		
TITANIUM	0		2		0		
POTASSIUM	0		0		0		
BORON		93		100		179		
SILICON		145		162		13		
SODIUM		5		6		34		
CALCIUM		5		9		42		
MAGNESIUM	2		3		3		
PHOSPHORUS	884		913		1683		
ZINC		13		21		68		
BARIUM		0		0		1		
     
SUS @ 210F	83.2		88.3		69.0		
Visc @ 100C	16.31		17.57		12.70		
Flashpoint	400		415		370		
Water %		0.0		0.0		0.0		
Insolubles %	0.2		0.5		0.2
TAN		1.4		1.8		NA		


05 Kawasaki BF750 - 284hrs
12 Jeep 3.8L - Amsoil ASL 5w30 74K
04 DMax 6.6L - Amsoil AME 15w40 238K
00 WS6 5.7L - Amsoil ASL 5w30 256K
Re: Amsoil 75w90, 35K, 04 Chevy Tahoe [Re: dhellman12] #3724661
05/09/15 12:57 AM
05/09/15 12:57 AM
Joined: Jul 2014
Posts: 1,544
Paradise of Florida
Greasymechtech Offline
Greasymechtech  Offline

Joined: Jul 2014
Posts: 1,544
Paradise of Florida
I tried a 75w110 and see if iron drops.
Otherwise, looks good and should go 50k or more.

Driving habits?


At what point should a lurker start posting :-)
Re: Amsoil 75w90, 35K, 04 Chevy Tahoe [Re: Greasymechtech] #3724848
05/09/15 08:19 AM
05/09/15 08:19 AM
Joined: Aug 2011
Posts: 256
Texas
dhellman12 Offline OP
dhellman12  Offline OP

Joined: Aug 2011
Posts: 256
Texas
Wife's tahoe. Mostly short trip driving with the occasional family trip / vacation. Some light towing of small trailer and ATV, but usually only a few times a year.


05 Kawasaki BF750 - 284hrs
12 Jeep 3.8L - Amsoil ASL 5w30 74K
04 DMax 6.6L - Amsoil AME 15w40 238K
00 WS6 5.7L - Amsoil ASL 5w30 256K
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