5 speed manual(?):
TYPE SG
Above 20°F (-7°C), 1992 30
Above 0°F (-18°C), 1992 20W-40
All temperatures 10W-30*, 10W-40*
* Preferred Synthetic

CAPACITY, Refill:
Civic, Del Sol 1.8 liters (3.8 pints)

I use 5W-30 Amsoil Synthetic Manual Synchromesh Transmission Fluid (MTF) in my 1993 Civic manual transmission. Change every 30,000 miles, while the transmission is hot. Honda also sells their own MTF.

Here's how to change the transmission fluid yourself:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-6.html#post625247