* Ineffective: The patch might not hold, leading to further leaks and potentially overheating damage to your engine.
* Further damage: Stop-leak products can clog radiator passages and even damage your water pump or heater core.
* Incomplete repair: Addressing only a surface leak might ignore a more serious underlying problem within the radiator. A small leak now could quickly become a major one.
* Voiding warranty: If you still have any warranty on the vehicle, using a stop-leak product could void it.
Instead of patching, consider these options:
* Professional repair: The best course of action is to have a mechanic diagnose the leak and repair or replace the radiator. This ensures a proper, lasting fix.
* Radiator replacement: Given the age of your vehicle, a complete radiator replacement is likely the most cost-effective and reliable solution in the long run.
* Used radiator: A used radiator might be a more budget-friendly option, but ensure it's inspected carefully before installation.
While a quick patch might seem appealing, the potential for more serious and costly engine damage far outweighs the temporary convenience. Get your Cadillac DeVille to a qualified mechanic for proper diagnosis and repair.
