Seafoam in Crankcase (how long do I leave it in?)
08-10-2009, 05:04 PM
#2
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Year: 1996
Model: Cherokee
Engine: 4.0
Can't remember what the can says, but start there. I usually add 1/2 can to the crankcase 1-2 days before every 3rd oil change, the rest goes in the tank.
08-11-2009, 10:30 AM
#4
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Year: 1996
Model: Cherokee
Engine: 4.0L, custom intake and breather, Mean Green Starter, Jeep (tm) flexplate
08-11-2009, 08:35 PM
#6
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Year: 1990
Model: Comanche (MJ)
Engine: 4.0L
On a thread on here awhile back, the popular consensus was that you can put it in, but go no more than 500 miles, at the most(so the 150-200 you said should good to switch) and then change oil and filter. Make sure the oil and filter are changed
08-11-2009, 09:35 PM
#7
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Year: 1998 XJ
Model: Cherokee
Engine: 4.0L
i leave it in there for three days. then a can goes in the fuel tank and a half a can goes in the vacuum line coming off your master cylinder
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08-16-2009, 04:22 PM
#8
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Year: 1996
Model: Cherokee
Engine: 4.0L, custom intake and breather, Mean Green Starter, Jeep (tm) flexplate
If you follow some of the muscle car forums, they mention having a full tank of fuel and near time for an oil change. Use the standard procedures as shown in that video I put up, and use ALL or almost all the fuel in the tank - that is the "best" way to gauge "how long" to leave it in.
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