Our Saab had a new radiator installed 2 months ago and we still experienced coolant leaks. The garage on two occasions said they tighten hoses but we had another leak. The mechanic replaced the radiator because the sides had come apart. When I picked the car up the mechanic stated there may be a block leak and the turbo was causing pressure in the system and blowing apart the radiator? Is this possible? We have no other indicators of leakage into the block an the car runs fine expect for the coolant leaks. Can you shed some light on this for me?