Amsoil OE vs XL?

Joined
Oct 8, 2013
Messages
508
Location
TX
So I was looking at these two products. They seem to have an almost identical spec sheet on their respective sites. This made me beg to ask the question, is the XL formulation worth the additional cost over the OE? Here are the specs sheets provided on the amsoil website.
Code:
TYPICAL TECHNICAL PROPERTIES				5W-20
AMSOIL OE 5W-20 SYNTHETIC MOTOR OIL			(OEM)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)		8.7
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)		50.7
Viscosity Index (ASTM D-2270)				150
CCS Viscosity, cP @ (°C) (ASTM D-5293)			5420 (-30)
Flash Point °C (°F) (ASTM D-92)				226 (439)
Fire Point °C (°F) (ASTM D-92)				242 (468)
Pour Point °C (°F) (ASTM D-97)				-43 (-45)
Noack Volatility, % weight loss (g/100g) (ASTM D-5800)	10
High Temperature/High Shear Viscosity			2.8
@ 150°C and 1.0 X 106 s-1, cP (ASTM D-5481)	
Four Ball Wear Test @ 40 kgf, 75°C,			0.45
1200 rpm, 1 hour, scar diameter, mm (ASTM D-4172)	
Total Base Number (ASTM D-2896)				7.9



TYPICAL TECHNICAL PROPERTIES				5W-20
AMSOIL XL 5W-20 SYNTHETIC MOTOR OIL			(XLM)
Kinematic Viscosity @ 100°C, cSt (ASTM D445)		8.8
Kinematic Viscosity @ 40°C, cSt (ASTM D445)		51.3
Viscosity Index (ASTM D2270)				151
CCS Viscosity, cP @ (°C) (ASTM D5293			5537 (-30)
Flash Point °C (°F) (ASTM D92)				226 (439)
Fire Point °C (°F) (ASTM D92)				242 (467)
Pour Point °C (°F) (ASTM D97)				-43 (-45)
Noack Volatility, % weight loss (g/100g) (ASTM D5800)	9.9
High Temperature/High Shear Viscosity			2.8
@ 150°C and 1.0 X 106 s-1, cP (ASTM D5481)	
Four Ball Wear Test @ 40 kgf, 75°C,			0.44
1200 rpm, 1 hour, scar diameter, mm (ASTM D4172)	
Total Base Number (ASTM D2896)				9
 
Joined
Jan 6, 2013
Messages
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Location
LaVergne, TN
depending on your drain interval goal is, either will do.. they're both similar everything.. XL has a higher TBN. but OE is pretty good as well.
 
Joined
Oct 23, 2005
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7,765
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North America
I've run OE to 5000 miles with good TBN remaining. XL will go further. As Flareside said, what is your planned OCI?
 
Joined
Jun 8, 2006
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5,447
Location
KC
same base, different additives. Slightly stronger add pack in XL. If doing manufacturer recommended intervals, no reason to go beyond Amsoil OE.
 

2012AccentSE

Thread starter
Joined
Oct 8, 2013
Messages
508
Location
TX
I understand the running longer part because of the higher tbn, but the other items listed on that spec sheet are within a point of one another. Makes me really wonder if there really is that much of a chemical difference between the two. Now the ASO is another story....that things a beast haha
 
Joined
Jun 8, 2006
Messages
5,447
Location
KC
most of those numbers are based on the basestock which is the same for both oils. They should be similar. The TBN is based on additive package, which is why it is different.
 
Joined
Mar 21, 2004
Messages
26,557
Location
Upstate NY
I believe Amsoil make high quality products. But if I were to go to the expense and hassle of ordering Amsoil motor oil I would get their best. Its makes no sense to get the XL or OEM in my mind. I can just for a get Mobil 1 or PP at Walmart. I do order Amsoil ATF and SVG from Amsoil
 
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