Toyota Repair: Toyota Camry, radiator shop, toyota camry

Question
Hi,
I have Toyota camry '93 with 140K miles.Lately after I drive the car for ten miles or so with A/C on and then park it. I hear noise for the coolant going into over flow bottle. Before I did not observe this. I don't see any trace of oil in the radiator or any trace of water in the engine oil. what can be the reason of this and what are my options to take care o this problem. I did observe a very little loss of water in the over flow bottle after the car has cool down completely. Thanks, Vijay

Answer
One reason may be a partially restricted radiator, removing the radiator taking it to a radiator shop may solve this problem. I would still recommend having it tested for a possible headgasket leak before doing anything else, most repair shops can do this for you.