Happy New Year Everyone ?,
Mid November I added K-Seal to my coolant reservoir.
About a week after I poured the K -seal, the water noise pretty much resolved, my heater started working again and the engine light went off (disappeared/ not on anymore).
I still have coolant loss about the same amount. I had one incident were car did not want to turn on at all.Turned ac/heater off and yup car turned on (no problem since then even with heater/ac on).
Had two incidents were thermostat suddenly jump to overheat car alarm when off. Pulled over, turned off car no smoke or sign of it over heating coolant level was good. Turned car back on almost immediately and back to normal like nothing , drove it home 200+miles.
Still has a slight rough start at times, still fill up coolant every so often depending how far I drive. It seems it only resolved the water noise and engine light turned off.
Does it work ???…… I don’t really know lol !!