Seafoam soak

[Quickstep192]

I’ve used Seafoam in small engines and occasionally in a boat motor by shutting off the gas supply, then filling the float bowls with Seafoam. Then, I let the engine run briefly on pure Seafoam so that the Seafoam gets in to all the passages. Smoke is the sign that it’s in.

After that, I let it sit for a day, then connect the gas supply back up then take the engine out for an Italian tune-up.

It’s worked wonders in these motors, but for some reason I’m a bit more fearful of trying it in the precious 911 engine.

Are there any opinions to be had on this?

[rowingone]

It can thin out your motor oil so . . as long as you change your oil after the seafoam flush.

[Quickstep192]

Originally Posted by rowingone

It can thin out your motor oil so . . as long as you change your oil after the seafoam flush.

Excuse my daftness. How does the Seafoam get into the oil? Does it get past the rings?

[khamul02]

I think he means you can add it to your oil as well as pull it in via the vacuum lines. But you need to change the oil shortly after.