hi i am new to the forum but have a problem with a recently purchased Disco 2 TD5 (2000) 200,000mls. After the garage replaced the rad as no heat was coming out coolant has been leaking overnight (dont know from where, seams to be on drivers side ) and a gurgling noise has started behind the dash when accelerating in low gears, the engine is not overheating Any ideas of what the problem may be.