2012 Freightliner M2-112

R12RTee wrote:

hone eagle wrote:

coolbreeze01 wrote:
I'm sorry, but buying a truck like that and worrying about mileage seems funny. Anything over 6mpg is good. Have fun :C

Maybe the op is just curious?

Curious for sure. ;) But it is part of the overall purchase decision.

I suppose that if one only goes short distances the mileage is not as much of a concern, but I travel from the east coast to the west often enough for it to be a possible sticking point on buying the truck. 6 mpg might be good but I'd be much happier with 8 or 10 mpg. I'm willing to sacrifice a little mpg for this truck if it has the power I think it does.

You will get over 6 mpg I promise! My 14 liter gets 7.5 mpg with a 23,500 lb trailer and a 2000 lb car on the back at 65 mph. My truck has tandem rear axles (add 1 mpg at least for a single rear axle), has 500,000 miles on it, and the 2011 and newer gets better economy anyway. That is what I would have if I did not carry a car and have a very heavy pin weight (pin weight, car, and steel bed would put me almost at 20,000 lb single axle rating).
They are also pricey, another reason I use a class 8 fleet return used truck. If you can afford it you will be very happy with it.
As far as valve adjustment, you are not an emergency vehicle needing every percentage of the HP daily. Go with over the road adjustment interval or if you feel guilty just double the emergency vehicle interval. Emergency vehicles take a lot of abuse and idle for hours in between, your use nothing like it.