Radiator stop leak
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by codyb86, Aug 20, 2019.
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No.......
Radiator stop leaks gum up normal operating systems and cause way more problems than they are worth. Replace the bad/leaking part and leave the magic fixing potions on the shelf.
If it does work it is temporary at best.Shawn2130, Hulld, Art Vandelay and 4 others Thank this. -
Shawn2130 and HoneyBadger67 Thank this.
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Mechanic in a bottle. Nope. I wouldn't use it. Good way to clog up heater cores, thermostats and contaminate the cooling system. Just my $0.02.
Shawn2130, mhyn, blairandgretchen and 1 other person Thank this. -
If the leak is in the fin tubes, clean it up as best you can and smear on some seal all, its a bandaid fix but will get you where you need to be to get it fixed. Tanks are easier, I've been able to patch a quarter-sized rust hole in a tank using some epoxy putty and two-part epoxy, like I said, bandaid fix, got me the 300 miles home where I had a new tank and gasket waiting.blairandgretchen Thanks this. -
Id crack 3 or 4 raw eggs into the radiator for a quick temporary fix before I used any stop leak product.... Eggs Will seal a small leak, and wash out when you get it repaired... Stop leak will seal leak, but don't wash out, ever.
blairandgretchen Thanks this. -
I would have to agree with most comments that it’s a band-aid fix and should definitely only be considered as last resort to get home. But I never recommend it. I’ve seen way too many jammed up cooling system components due to these “magical” sealers that people use instead of getting the proper repairs done. IMO stop leaks of all kind, A/C, coolant, engine, power steering, are just a waste of money and it gives you a false hope that the truck might fix itself.
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