You can run a concentration up to 1 pint for every 10 gallons for maximum cleaning. You should have no problem running two cans on a full tank. I have and saw no ill effects, but it definitely improved drivability.

As far as the vacuum goes, I just keep it in the can, get a spare length of vacuum hose, stick in it, suck it up, stall it out, let it sit for 30 mins, start it up, and drive it until the smoke is gone. its better to drive it when smoking instead of sitting, theres too much smoke for one thing.

but yes, do about 4 wot runs to 60+, drive around for maybe 30 mins.

o.k now on my 88 sse that i plan to use the seafoam on, where exactly is the vaccum hose i am supposed to suck this stuff up with.?

and i just start the car ,
then disconnect the vaccum line and stick it in the can,
then just pull it out when its finished and cover the hole in the vaccum line with me finger untill the car stalls out,
then reconnect vaccum hose line ,
and let it sit for 30 minutes,
then start it up and drive for 30 minutes,
and od a couple or wot runs to 60+


are these the exact steps on how to do it.?

I replied to your thread in the 87-91 section with a picture. Here is another one.

There are several different vacuum hoses you could use that connect to the throttle body, they are all vacuum, they all suck. The easiest thing to do is to have a spare piece of vacuum hose to connect directly to the throttle body so it will be flexible enough to fit down in to the bottom of the Seafoam can. The ones that are already connected are too short or are to rigid to bend and fit into the can.

so i can use any one of those hose'* with a red arrow on it.?

can i use a funnel.? or should i just buy a peice of vacuum hose.. and what size hose do i buy.? thanks

you shouldnt need a funnel or any extra hose. just pull the hose off, and let it suck some off the top. once it is almost gone, just shove it all the way into the cup, and let the car stall out. once it has sat for a half hour or so, start it back up and take it for a drive.

Yes. The small arrows, not the big arrows. If I were you I would use the vacuum nipple closest to the intake manifold so you are less likely to get any Seafoam into someplace it doesn't need to be. I don't blame you for being cautious, but this is really pretty easy stuff. Once you do it, you will see.
You may also want to look at this thread from someone else who has done this recently.

it depends on which hose you hook up to. Some are 5/32" some are 1/4" and the hose to the brake booster is about 1/2" (not positive there). Vacuum hose is cheap. If I were you I would buy some of each size and replace all the rubber coupling pieces like the ones in my picture with the little red arrows on them. I guess it would be possible to use a funnel, not necessary but possible. You would still need to have a hose to get it into the engine. An extra hose on a vacuum nipple will pull it out of the can just fine. That'* what vacuum is, it sucks. Picture your engine as a hungry baby and the can of Seafoam as a baby bottle. Put the bottle in the baby'* mouth and the baby will do the rest.

On the later model cars there may be enough slack in the vacuum lines, but I can tell you from experience, because I have one of these old VIN C cars, that the rigid lies will snap like a toothpick if you try to bend them in a way they don't want to go. Like I said, the easiest way is to use an extra piece of vacuum hose plugged into the vacuum nipple in place of one of the other vacuum hoses and suck the Seafoam out of the can. [/quote][/i]