Like radiator stop leak stuff, its temporary at best. You might get a way with it in some cases but the many "rebuild your engine" in a bottle is far from anything that I'd put my faith in. It does make you wonder how many used cars were given a "fix" and sold with fingers crossed that it doesn't come back?? Caveat Emptor as they say!
Awww, just throw a few bananas in the crankcase and maybe some oatmeal in the tranny and diff...
You can drink some Maalox to settle the burn, but the ulcer is probably still there! I'm with @hyperv6 - use it to limp home, then line out a way to do the long-term proper fix.
I had a co worker that stripped a plug in an Omni. It was not worth the parts to tear down. So he JB welded it in. He did get two more years out of it.
Many products in a can are often temporarily fixes to a terminal problem. Your results may vary.
Now one thing that does work is Marvel Mystery Oil. The old timers turned me on to this and it really works.
I had a 65 Corvair with a locked up engine. We got it free. The valves were sticking so we put more in the gas and oil and it freed up the engine.
The car was crashed in 67 with 9,000 miles. It sat for 30 years. Once we got it back on the road it is still going today.
The Marvel cleaned up the engine and it never was an issuer.
In the old days it was common to see a cracked radiator, head or block in racing and teams would use JB Weld to seal the leak. We also would dump a Coke on the clutch to make it sticky to finish a race too.
A great story! This reminds me of the time that I was driving to my first real job in Boston. I blew my radiator on the Ohio Turnpike around Cleveland. I was able to nurse my car into Erie PA by keeping the cap off and pulling off to refill the radiator at gas stations. At least once I had to take a wastepaper can down to a culvert beside the road and refill the cooling system with swap water. LMAO !
I had a bad head gasket in my 1984 Plymouth Reliant K, I think it was the 2.3 4cyl. A trusted mechanic told me that if I was going to try to pour in sealant the by pass the heater core first, otherwise it would clog the heater core. I did'nt listen, the heater core went and this was in the middle of winter , and it was my winter car. I wanted to park it and restore someday but didn't have the room if I was going to replace the "winter" car so this was the end to my K car that I wish I still had. I was NOT going to bring it to a shop and pay for a new heater core and head gasket.