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99 Durango 5.9 part out
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1,252 Posts
Like Wyoming said, great directions on the seafoam site, but I wouldn't pour it down the TB, there's a how to thread posted last week about removing and cleaning the TB. You'll end up w/ it in the kegger and eating your belly pan gasket, then you'll have real problems. Crank case should only be driven for like 30-50 miles b4 an oil change, or if you leave it in all the time you've got to follow the directions and check your oil regularly and be ready to change it at any time. Nothing wrong w/ the vacuum line.
 

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99 Durango 5.9 part out
Joined
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1,252 Posts
ok soo i wont pour it down the tb. I was just iffy on pouring it in my crank case because it might loosen up gunk inside the engine holding it together, cause i have 180k on my motor. And i didnt want to pour it in my vacuum line because it will only get to one head, that's what i heard. but if its safe to pour it in my crank case even with the high mileage i will do it cause im ready for an oil change anyways, i would change it after about 50 miles after putting it in my crankcase and gask tank.
It will break up crap after you pore it in the crank case, that's why you need to change the oil right after. 50 miles is max I'd say one trip 30 miles. Keep an eye on the oil after the change too, it might get dirty fast.
 

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99 Durango 5.9 part out
Joined
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1,252 Posts
There's nothing wrong with pouring it down the TB, as long as you pour it slowly it's not gonna sit in the intake. Pour 1/3 down the TB and put the rest in the tank.... you should also physically shut the truck of and not drown it out with the seafoam, and do not pour in more with the engine off.

Also don't rev the shit out of it once you start the tuck back up, upping the rpm is fine but a lot of people go overboard
will pouring down the tb foul the plugs ? Soo i guess i will do the tb then, only 1/3 and some in the crank case and some in the gas tank.
I wouldn't want to pour it down my tb, it'll pool up in the manifold and eat your belly pan gasket that's already prone to leaking if your stock. Removing the tb to clean it isn't that difficult, a couple how to's on here walk you through it, you could do it w/ out the how to.

somebody was telling me to dip the pcv in a cup of the stuff. is that recommended?
It'd probably just clean it up, I don't see a real problem w/ that, but you should search the seafoam site for that first.
 

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99 Durango 5.9 part out
Joined
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1,252 Posts
No, it is also meant to clean up the cylinder heads and valves, etc, in a much more concentrated fashion that just pouring it into your gas tank.
That's what pouring it into the hose while it's running and then shutting it off is for. Into the throttle body is going to pool up in the manifold.
 
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