In addition to my check engine light issues, CV axle joint issues, I also have a problem with Coolant Leaking out of system. There are never any drops of antifreeze detectable on the ground, but I have to frequently top off the radiator and must keep a gallon handy in the car. The shop has been unable to detect a leak in the system and say it could cost a thousand or more to find it so keep driving it and topping it off. This is OK I guess as long as it doesn't leak any more than it is. They even put in some "stop leak" and it seemed to help for a while, but I am hesitant to use that stuff again.