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Joined: Oct 2007
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From: Farmington, Minnesota
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Joined: Jan 2007
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From: Circle Pines
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Joined: Nov 2006
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From: North of Greenville
I've run 5w40 syn from Amsoil and am now running 5w40 from Schaeffers. Amsoil didn't run as well or as long as I had hoped it would, so I'm checking out the Schaeffer's 9000 series right now. I also plan to try out the Rotella-T 5w40 to get a nice 3-way comparison. Regardless, I'm sticking with the 5w40 year-round regardless of who comes out the winner for me.