Is there a situation where Radweld is ever a good idea?

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! YIKES! The things I've seen when folks use stop-leak. It's the stuff of nightmares! Using radiator-stop leak products like Radweld is only a good idea if you're losing coolant, stuck in the desert, and the coyotes are starting to surround you. It's completely temporary and never a fix. Using it to mask ongoing issues like coolant consumption or misfires, is a big nono, especially after major engine work. Stop leaks can clog cooling passages or affect engine components, potentially causing more problems. Rather than relying on stop-leak products long-term, address the root cause of coolant loss with proper diagnostics and repairs. Sounds like there could be an underlying issue Make sure that cylinder 3 has compression! Good luck! If you have any other questions, please call us at 877-913-1554! We'll gladly find you a certified RepairPal shop in your area!