After a 2 hour drive my 95 maxima is leaking about half a quart of coolant . I am considering a stop leak sealer like Lucas or Bars .I've read that a car like mine is an actual candidate for this chemical fix since it does not overheat and does not use coolant that rapidly . What do you guys think is it worth a try ?

 

Where is it leaking? Why do think it's the head gasket? Has the car overheated recently?

 

Is the leak near the passenger side tire?

 

I would never use any type of leak sealer in any car that I own.

 

I'm thinking that the water pump is failing. Stop leak would not fix that.