To seafoam or not

What does it do to oxygen sensors? I see no evidence that proves it will not clog or poison them.

 

Back in the days of carburetion, people used to clean the engine internals by pouring a limited stream of water down the carb with the engine fully warmed up and hoping that it would turn to steam and blast particles out of the combustion chamber. Before catalysts, sensors and turbochargers, it was a useful process.

My O2 sensors read fine, when I pulled my exhaust and cat'd downpipe to change my clutch it looked fine. As I said before I've been using this for years with NO issues.

Wagon has 240k mi (140k mi tuned stage 2, only one cat left). I Seafoam before every other 3k mi OCI. Replaced the (now sole) O2 sensor once since tuned. Failure was not proximal to Seafoaming. Never had an issue. Except for Seafoam testimonials, I feel that most additives are snake oil.

 

 

 

Adequately designed studies are rare. The BG Chemtool claims are true that it dissolved polystyrene - it's got acetone in it! Duh!