Manav

GMC Sierra 1500- 2500 (V8 GAS) I have a dripping leak on front of the truck, under the hood on the front end in the centre. Never had the drip in winter, but now its warming up so I turn on the A/C. The Liquid looks clear, but when touched feels a bit oily. Not sure if it is the condensation from A/C. Is it normal for the old truck to do this in summer time? and/or is it a serious or time sensitive issue to be fixed? PS: There are no warning lights going off and all the gauges are normal.