I am slowly going through everything on the HX. Today's fun was replacing the valve cover gasket. Whoever installed the previous one did a terrible job. The car has 226k miles and who knows how many previous owners. Enjoy...
I was a young mechanic at a Honda dealer when the HX was out. Two door only, lean burn E-Vtec engine meant for fuel efficiency, alloy wheels, same seats as the EX... The engine in the HX trim was made in Japan while other Civics had Ohio made engines.
Most came with a 5 speed manual but a few had a CVT which was unreliable as one would expect in the early days of the CVT. The HX Civic felt faster than the EX of the same model year despite the HX not having quite as much HP.
It's been leaking a lot. The bottom is coated in oil. I can't tell if the oil pan gasket is leaking or not. So all that to say, that I usually add 1/2-1 qt of oil in a 5k mi run. I've only changed the oil three times so far and all with a synthetic 5w30. It might be time to try a high mileage 10w30 or 40.