I have this wierd problem, my altima is loosing 1 gallon of coolant
per week, but only when engine is cold. I can drive for hours without
loosing a single once of coolant, but as soon as I park the car for
the night, it lost a lot of coolant on the ground.
The oil is OK ( no coolant in it ), and it look likes the coolant is
coming from behind the engine.
Any hint what I should look for ?