Find out how oil additives may be bad…
Are engine oil additives good or bad
by Alex
Expert answer:
Quick answer
Engine oil additives can be helpful for mild leaks or deposits but may harm if overused or mismatched. “Good or bad” depends on correct application and whether the engine truly needs extra help.
Detailed answer
It’s easy to hear dramatic stories—from miraculous engine recoveries to fouled catalytic converters. The truth is more balanced. An additive to condition seals or enhance lubrication can extend the life of an aging motor, while one that’s incompatible or used in extreme amounts might disrupt oil flow or deposit metals in sensitive emission parts. Diagnosing your engine’s condition first is key. If the additive aligns with a legitimate problem (noise, sludge, small drips) and you follow the instructions, you’re likely to see positive outcomes. Otherwise, you risk potential downsides.