I have 3 gallons of Amsoil S3K 5w30 and 1 gallon of AMO 10w40 in my POL conex. I need 4 gallons to do an oil change on my 6.0 PSD (BE-110 bypass installed). Anyone have an objection to this 3/1 diesel blend? Unless I get my a$$ chewed out here for trying it I will use it. I'm going to call it Amsoil High Performance PowerStroke Diesel Formula 10w30. It should be a very heavy 30 weight around 12.45 cst I'm guessing. I'll have a virgin sample to post in a week or two. snoboy