How long to run seafoam thru crank case?

[KevinJ]

I did a search and looked for about an hour, found nothing. when i run seafoam through the vacuum lines i do it after the butterfly valve, understood.

but how long do i run it through the crank case with the oil?
im planning on an oil change today so i bought some, wondering if its a 5 minute kinda thing.

 

[pektel]

EDIT. misread your post. oops

 

[2000 LS]

Check this link out, it should answer all your questions: http://www.crankshaftcoalition.com/wiki/How_to_SEAFOAM_A_VEHICLE

 

[KevinJ]

thanks 2000 LS.
i found that after i posted this.
but thought it would be a good idea to get another perspective as well.

 

[2000 LS]

No problem, glad to help.

 

[97stscaddy]

You don't need Seafoam in the crankcase if you run synthetic oil. Synthetic oils have cleaners and anti sludge additives in them already, so adding Seafoam is just a waste of money. I use half the can in the intake, and then pour the other half in the gas tank to clean fuel injectors with.