[freekintoad]

The chocolate brown color indicates that all is well. Black or oily plugs
...the car is running too rich, or there are seal issues.
White plugs would indicate to me that you may have a small coolant leak
in the intake gasket on that cylinder, or cylinders. The coolant or water, as it
slowly enters the cylinder will turn to steam vapor from the heat of combustion. It will "Steam clean" the plug, and make it appear "New".
The car may not miss, or run badly because the leak is too small to cause the
plug to foul, or interupt the firing of the plug. If the leak gets bad enough,
the engine may miss, or you can detect as small amount of steam vapor
coming out the exhaust. The coolant level may not appear to drop because the leak may be very small. I am not a big fan of putting stop leak in a system, but I have seen it work on small leaks such as this. I have been in the radiator business my entire life, and only know of one such stop leak
product that generally works without causing other problems.
Bar's leaks.... It is made of pellets made from ground Ginger root, and ground
almond shells. The almond shell particles remain solid, and keep the ginger in suspension for a while, and then they dissolve. The Ginger root stops the leak.
It finds it's way to the leak and enters the area. It enters a crack and begins to swell up on the way out when exposed to air or heat and air. The more of it that enters the crack...the more it builds up..and then the seal will be
made.It coagulates in the crack like a clot. The only downfall to the product that will cause it to fail is vibration. Heavy vibration. Stop leak[bar's] can be a quick fix, and can last. Sometimes better than taking the intake off, and going through that labor. The leak will be in the INTAKE GASKET, and not the
head gasket. The water or coolant will be entering the cylinder from the intake port or ports.
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