Specifications include, but are not limited to: Qualified firms to provide Tractors with Mowers for the purpose of mowing highway right of way, throughout the Commonwealth of Virginia. a. Weight and Wheelbase 1. The basic 4WD tractor with cab shall weigh a minimum 8,100 lbs. as noted in the bidder’s standard tractor literature. 2. No counterweight, cast-iron wheels or hydro inflation shall be used to increase the tractor weight. 3. Wheelbase shall be at least 89.0 inches 4. No wheelbase extensions or modifications shall be used. b. Engine 1. The tractor shall be powered by a diesel engine rated at not less than 65 PTO horsepower having at least 270 cubic inch displacement. 2. Engine shall meet all State and Federal engine emission requirements in affect for this class of equipment for the model year purchased. 3. Engine shall be equipped with air filter, oil filter, fuel filter, governor, electric starter, alternator/generator, battery, muffler and cold weather starting aid. 4. Engine coolant shall be factory fill extended life coolant mixed approximately 50-50 with deionized water to provide freeze protection of -34º F or lower. Antifreeze shall be compatible with Mobil Delvac Extended Life 50/50. 5. If exhaust is vertical, a rain cap or deflector elbow shall be furnished.