Never mind... edited and took out what I was looking at because it was diesel...
Hmm, I'm doing a second edit (yes I'm being extremely indecisive in my answer

)
http://www.amsoil.com/storefront/ame.aspx
It states that it can be used for:
APPLICATION
AMSOIL Synthetic Blend 15W-40 Heavy Duty Motor Oil is recommended for diesel engines, gasoline engines and other applications that require any of the following worldwide specifications:
API CI-4+,CF, CF-2, SL
ACEA A3/B3, E2, E3, E5
Global DHD-1
JASO DH-1
Mack EO-N Premium Plus '03
DDC Power Guard 93K214
Caterpillar ECF-1-a, ECF-2
Cummins CES 20071, 20072, 20076, 20077, 20078
Volvo VDS-2, VDS-3
MB 228.1, 228.3, 229.1
MAN 271/3275
MTU Type 2
Not sure if this is what you are really looking for though?