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I turn it off and sometimes it sounds like liquids are pouring down a drain
I don't see any lights or degradations
Maybe check your coolant level like Boojum suggested... If it is low, circulating coolant settling could make weird noises.
Also consider an AC diagnostic. Prices are about 20-30 bucks. Low refrigerant could be the culprit, as insufficient circulation could make a gurgling sound. But that would suggest you are also losing refrigerant, probably from O-rings.
If it is low refrigerant, you could have your auto repair shop use a leak sealer and refill the system. These work on small leaks brilliantly. As replacing O-rings is a bitch, they cost pennies but getting to them requires major disassembling.
Or worst case scenario, you have a bad head gasket. That means air in the coolant and normal circulation is very limited. Also when the engine gets warm, your heater doesn't work properly, cause the tubes that feed coolant into the heater core usually sit higher than the level of the radiator. In such cases, you do hear weird fluidy sounds.
After a 20 minute drive, check your heater, pop it on max and see if it blows hot air. Then pop the hood and check the coolant.
NEVER open the hot container unless you want 11th degree burns! The container is usually semi-see through and if you can see bubbles in the fluid, it's a bad indicator. You risk overheating and breaking down.
You can also have a mechanic do a quick pressure test on the cooling system, shouldn't cost more than 50 bucks.
Or if you are up for the job, buy a pressure tester kit. My 18 piece kit cost me about 60 bucks and it works with most car makes.
During restoration, my old '86 6-series BMW was so bad it had low compression, start trouble and ran like garbage before I replaced the head gasket.
Never checked the heater, cause I was working on the car in the summer.
All very sensible advice from a motorhead who knows a lot more about cars than I do, but I'm still not convinced noise from the AC indicates that attention is required.
It has been a while now, but I'm almost certain that one of our cars - a Nissan Navara pickup - made odd little gurgling noises shortly after being switched off from the time it was new.
If the AC isn't blowing cold when set to max, then having a mechanic check out the system would be sensible. (Ideally, one of those rare mechanics who you know isn't the sort who will _always_ find something wrong that costs a small fortune to fix.)
I'm getting it looked at on the seventh, they're doing a general inspection and an alignment check
I wanna make sure to catch anything that's on the warranty while it's still early
I think Boojum was right about the coolant returning to a stable equilibrium, I've only driven it for a week or so since I've gotten it
I think that's what happened to my Cadillac, they said the radiator was leaking coolant internally from some washer or something which eventually caused the head gasket to blow
I honestly don't know like anything about cars, but I was making effort with my Cadi since I really liked hearing that engine roar. I figured out all the oils and kept up with them weekly, but a warning sign I missed was having to fill the coolant more and more frequently, like weekly to twice a week
This car isn't as powerful, 4 cylinder, but the handling is superior, which I'm growing fond of
I really want to be able to keep this car for a while, I'm gonna make sure they show me a lot about it when I see the mechanics
If the car has air conditioning, the gurgling sound is most likely caused by the refrigerant in the system settling back to an equilibrium state after the compressor that's driven by the engine shuts down. That's nothing to worry about.
If you want to test this theory, you could try running the air con at max for a while, shutting off the engine and listening, and then repeat that with the air con switched off.
The only other engine-related liquid in the passenger compartment is the coolant circulating through the heater coils. But I suspect your engine coolant level would have to be pretty damn low to hear anything going on there, and that would cause the engine to over-heat. Still, it's a good idea to periodically check the level of coolant in the expansion tank connected to the radiator when the engine is cold and make sure the level is somewhere close to the 'Cold' mark.
I think you're spot on with the the air conditioner - I usually have the fans blowing at least a little almost all the time, that's why I've noticed it
It's new to me, at 100k miles (about half the life if you're used to kilometers and stuff)
I'm bad with cars but the best selling point the salesman made was that it'll last a few years; better than the last two cars I owned
Gonna have him looked at in a few days by mechanics I've used for a while just to be safe