So I got a pipe cleaner about 5ish inches inside the tube and then I couldn't get it to go any farther and didn't want to poke a hole in anything. The first 3/8" came out pretty brown so hopefully it loosens something up in there.
So I have tried searching as best as I can here on the site, and couldn't find an existing thread describing a similar sound.
I just purchased a 2011 SR5 with 101k on it. First 4Runner but have had toyotas for a while. When the AC runs for atleast 30 minutes or so, you can hear a sloshing type...