We're talking maybe a 16th of an inch to an eighth over a couple hundred miles out of the expansion tank. Coupled with this, I see that there is wet coolant around the expansion tank cap.
Now, just to eliminate spillage, about a week ago I dried that area thoroughly (as in spotlessly clean). Now there is some wet coolant there again.
It's not boiling over or anything -- the coolant level in the expansion tank goes up by a normal amount (to the hot mark) when the truck is at operating temp and back down when it's cold. So my question is, how is the coolant getting there -- evaporation and condensation, or what? and is this normal? I don't remember it happening when I first got it, but there was evidence of spillage, so I guess it could have been doing it.
Now, just to eliminate spillage, about a week ago I dried that area thoroughly (as in spotlessly clean). Now there is some wet coolant there again.
It's not boiling over or anything -- the coolant level in the expansion tank goes up by a normal amount (to the hot mark) when the truck is at operating temp and back down when it's cold. So my question is, how is the coolant getting there -- evaporation and condensation, or what? and is this normal? I don't remember it happening when I first got it, but there was evidence of spillage, so I guess it could have been doing it.
