help 98 lumina 3.1 coolant loss

[snick]

This one is driving me mad. Im loosing coolant. about a pint a week. Cant see any leaks in the radiator. No coolant is seen the oil. car runs excellent. no leaks can be seen from the waterpump weep hole, or hoses. no unusual smoke out the back. no leaks can be seen around the intake manifold. no liquids found under th car. car does not run hot. so where is the coolant going?

any ideas or methods to track this down would be much appreciated!!

Thanks, snick

[tblake]

Take a flashlight and look down at the valley gasket on the drivers side of the motor. If any seepage is seen from the silicone valley gasket, you've got a leaky intake gasket.

[snick]

if it is the intake, has anyone had success with any of the of the "miracle in the can" additives that say they will stop a leak like this?

[richtazz]

IF it's the intake, no "miracle in a can" will fix it. The leak is due to a crack in the plastic/rubber oem gasket and cannot be fixed with stop leak chemicals.