There are many places you can but a freightliner fl70 for your business. If you want the best deals, you may want to check out a local police auction.
Nothing fantastic, but it does what it's supposed to.
Cooling system ,water or thermostat bad
No way of answering without knowing drivetrain, chassis length, and configuration.
Which model? You could be referring to anything from the FL70, all the way up to the Coronado.
You didn't specify which engine. Normally, it's on the left side of the engine block, about 1/3 of the way forward from the rear of the engine.
Freightliner dealership.
Need to know exact model and configuration. A sleeper berth equipped line haul tractor and a daycab FL70 aren't going to have the same specs.
The starter goes with the engine, not with the truck. I've never measured torque when replacing a starter on a medium- or heavy duty truck... just ensure it's properly seated, ensure its secure, and roll with it.
The 5.9 in all applications is supposed to take 2 us gallons or approximately 8 liters with filter change. The kink comes when the chassis manufacturer changes the oil pan.
Commercial Truck Trader is a web site that assist those looking to purchase or sell commercial trucks. http://www.commercialtrucktrader.com/truck-types/search-results?vrsn=links&format=type
The best way to get information on how to buy a freightliner truck, would be to look on international's website. They sell a lot of freightliner trucks.
I found a site that you can buy a used freightliner with pictures available for you at www.selectyourtruckdeal.com. They also offer other tools at there site to help aid you in making informed decisions.