Yeah it is, a buddy of mine drove his back from flordia towing a trailer with a poped gasket, and for a month after that, it eventually got so bad that he could not drive it though!I have the same problem in that the truck runs good ( I guess ) but have to add coolant every 200 miles or so. I bought the truck online and flew to Texas to pick it up and when I got in it to drive it home the " low coolant level" light was on so the dealer removed the cap to add coolant and the cap blew sky high, on the way home it used about 14 gals. of coolant. Is it possible to drive the truck 1500 miles on a bad head gasket?