It appears that my upper intake is leaking. The first one failed at 102,000 miles and now with 202,000 it is time to replace it again. The strange thing is that I can't actually see the coolant leaking out of anywhere. I can see that it has been collecting on the lower manifold, but I canít see where ití* been coming from. It doesnít seem to be burning coolant like it did the first time, so no big white clouds of smoke from the exhaust. I had to add some coolant to the reservoir, so I think Iíll work on it this weekend before it causes more problems. Does anyone have experience with the aftermarket intakes, or other advice about this problem?