I have found on many Hondas and most other aged cars mostly is the leak at the Sump. Make sure you inspect the oil sump gasket to see if theres any oil seeping thru and leaking.

- Tail gate leaks as said
- Water leaking thru from the Antenna
- Windows going off the track
- Windows going up extremely slow sometimes not even up all the way

But these are the main problems I have in my Integra and other hondas I've owned.