Honda Experts,
Has anyone ever tried one of the "stop leak" products? Did it work for you? I'm considering trying one of them.
I have a very small water leak. I think it's in the head gasket. It's so small, I only have to add anti-freeze about every 1,000 miles. But the check engine light comes on sometimes.
Bar's Leaks has "Head Gasket Fix" for $30 Says: This formulation contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps & cracks and harden to permanently stop leaks.
CRC Industries also has a product "Permanent Head Gasket & Block Repair with Nanotechnology" for $21. Says: Permanent repair for head gaskets, radiator and heater core leaks. Advanced nanoparticles allow product to fill voids that a typical head gasket repair product can't
Do you know if these work? Even if temporarily? Do you know if they also do bad things to my car? It's a 97 Civic LX, with 260,000 miles.
Note: I notice that some versions of these say they don't work with coolant, which seems kinda worthless. I would get the kind that does work with anti-freeze.
Thank you,