when putting seafoam through the engine, i know gas tank and oil, but where should the last third go.

 

Why are you putting this in your engine?

You do know that you should drain it out shortly after putting it in the oil.

 

I'm asking the same question.

 

you run sea foam into the engine to help clean out thecarbon before and oil change. last place to run it into would be the brake booster line that goes into the engine. wait about 15 minutes while running truck then change the oil. this will help get the carbon out. nexted oil change should be sooner because you wont get it all out. but becareful, when you alot of smoke coming out of the tailpipe dont worry, its just the product doing ehat is made to do

 

I have heard it can plug up the cat, have you guys heard this before?

 

THANKS A MILLION , superdak, now that leads me to my next question, where is the brake booster line located on a 4.7l?

 

Just why do you feel the need to use it?

Do you have a problem with the truck? If so, why not have it fixed? Either under warranty, or else by yourself if you can.

Using Seafoam is ok when warranted. Just don't use it because you "heard" so and so talk about using it.

If there is a problem fix it.

 

The use of it when warranted is ok. Warrented as in much older, neglected vehicles with more miles on them.

If his engine needs it, just why? With todays fuels and oils, he should have no to little carbon build-up.

If so, again I ask why does this condition exist?

The use of Seafoam is right up there with fuel injector cleaners. They should not be needed unless there is a problem.

Preventive maintenance is one thing, this looks to be a case of monkey see, monkey do.

Signed, ASE Master Tech and Profesional Race Engine Builder