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Amsoil Question?
I talked my Grandfather into running Amsoil in his 2002 2500 Duramax with 38K. I'm getting ready to order it and I'm not sure if I should get the-
15W-40 Heavy Duty Diesel Oil
10W-30/SAE 30 Heavy Duty Diesel Oil
5W-40 Premium API CJ-4 Diesel Oil
What do you run?
2007 Z71 Silverado Crew Cab Blue Granite Matallic
2.5" Leveling kit, Chevy Tanoue cover
AMSOIL DEALER
Past 
2005 Z71 Ext Cab
2001 Z71 Ext Cab (with a piston slappen 5.3L!)
1999 Z71 4dr Hoe (the babe wagon!)
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