I'm no fan of using additives for no reason which is exactly what a lot of people do.
We see it all the time, nano this, nano that, ceramic the other, mechanic in a can and all the rest of it advertised to keep the engine line new until the second coming.
When something has been neglected or is having problems due to some design issue like some rings have then sure why not give something a shot before ripping into the engine.
Spending that $20 on a good wash including the under body will probably go a heck of a lot further in keeping the car in good shape longer than a bottle of snake oil thrown in the oil for no reason at all.
We see it all the time, nano this, nano that, ceramic the other, mechanic in a can and all the rest of it advertised to keep the engine line new until the second coming.
When something has been neglected or is having problems due to some design issue like some rings have then sure why not give something a shot before ripping into the engine.
Spending that $20 on a good wash including the under body will probably go a heck of a lot further in keeping the car in good shape longer than a bottle of snake oil thrown in the oil for no reason at all.