RADIATOR LEAK SEALER - DOES IT WORK? (loss of coolant)

Radiator Leak Sealer, Radiator & Block Sealer

How to Identify and Fix a Coolant Leak

Seal It and Forget It: How to Identify a Coolant Leak in Your Car and Seal It Like a Pro — Irontite Products Inc.

My head gasket just started to get a leak, no issues yet. Has anyone used this stuff/does it work well? Figured it's worth a try : r/MechanicAdvice

Rislone Aluminium Radiator Stop Leak 479g - 41186 - Rislone

Is this stuff safe to use? : r/MechanicAdvice

Bar's Leaks Block Seal Liquid Copper Intake & Radiator Stop Leak, 11226

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair : Automotive

Coolant leaking from thermostat housing?