A 4x2 tractor with a GVWR of 33,000 lbs. would be. Most CL120s are 6x4 tractors, which would have a GVWR of ~54,000 lbs., making them a Class 8 truck.
The highest point on a Freightliner Columbia will typically be the exhaust system, which may be up to 13'6 high, and regardless of sleep height, that constitutes the overall height of the power unit itself.
IIRC, the door panel on a Columbia is all snapped in (as pretty much the entire interior of a typical Freightliner fleet truck after the FLD120 is)... you just need a door trim puller to go around the panel, and pull it out, or even a simple slotted screwdriver should work.
The CL120 is an actual Freightliner nomenclature. L-120 is a light tank which was used by Sweden and Norway prior to the Second World War.
It comes with whatever sized tanks the orignal purchaser ordered it with.
Depends on which model. Pretty substantial difference between an FL series (FL50 - 120, FLD132, et. al.) and a Columbia.
Gross weight for a single vehicle will typically be 54,000 lbs. (manufacturer's GVWR), unless it's a heavy duty truck with heavier axles.
Need to know specifics of the truck. Diesel is available in Class 1 through Class 8 trucks - the fuel mileage will vary greatly between the types.
The vehicle is a 2006 Freightliner Columbia 120. It's a three axle 6x4 tractor, with a 12.8 litre motor - offhand, I'm unable to tell you the manufacturer, but it's most likely a Mercedes-Benz MBE4000, although there is a possibility of it being a Caterpillar C13.
Depends on which model Freightliner you have. If you have an FLD (120 or 132), you'll have to unscrew the panels they're mounted into in order to access them. It may involve removing multiple interior panels which overlap each other. If it's a Century Class, it should be much easier.. a lot of the times, the only thing holding those panels in place is the seal around the doors.
i think 120 mph
The answer is 49 degrees N. and 120 degrees N.!
You left the important piece of information out - the engine make and model. The FLD120 was available with a number of engine options from Detroit Diesel, Caterpillar, and Cummins.