Ok i have a '98 durango 4x4 5.2 with 180k, i have used the search button looking at all the seafoam threads and theres a few ways people do it. Soo idk if i should go ahead and buy 2 cans or just stick with one. I think im gonna pop off the air hat and pour it down the tb, but idk how much, half a can? then i would like to pour half to a whole can in the gas tank, and i will make sure i have a half tank and i will pour in the sea foam in at the gas station and then i will pour it down the tb. I say screw putting it down the crank case and the vacuum line? is the tb&gas tank i good combo? and how much for each? will i need to change my plugs or oil if i do the tb&gas tank ?