[Big Dave]

I wonder what kind of MPG I'd get if I ran your speed profile? My truck would be ticking over 950 RPM in double overdrive.

But I have to get out and compete (70 MPH) on the slab every day and boogie right along (60 MPH) up State Roads 9 and 67. I'm getting run off the road as is. Good thing my truck is 7,000 lb rolling fortress. I wonder if Indiana's open carry law permits a CROWS turret?

BTW I, too use the AMSOIL Diesel but I use the 10-30. Oil analysis shows that I can extend oil changes (no small issue on a vehicle that holds 3.5 gallons of oil) out to 25,000 miles. Since I split my driving between the truck and my Impala, the truck get 13,000 miles a year, so i change oil in October in odd-numbered years. I change the main and bypass filter every October whether it needs it or not. Even at 25,000 miles my analysis says I'm changing out good oil by my old-school nerves frazzle out at that interval.

I also removed the air heating coil. I couldn't even visualize a situation I would need it. My old T444E engine uses glow plugs for starting.