If you look at the right-side face of the transmission housing (where
the right CV shaft comes out the differential), there is an oil filler
plug above it (on the side face). The transmission drain plug is at the
bottom (side) of that side-plate.
Replacement capacity = 1.8 L (1.9 U.S. quarts)
Torque settings: Oil filler plug = 45 N.m. (33 lb-ft)
Oil drain plug = 40 N.m. (29 lb-ft)

Use Genuine Honda Manual Transmission oil, NOT gear lube. The manual
will say to use 10W-30 engine oil, but that was 15 years ago. From what
I have heard, the oil chemistries have changed, so need to put the
Honda stuff now (dealer service departments stock it....about $3 per
quart). If you have problems locating the filler and drain plugs please
drop a line, I will scan the diagram off the service manual and e-mail
it over.

gmctruck68 wrote:
> How do I lube a 4 speed manual transmission, in the 88-91 Civic Hatch? I
> know I have to use gear lube, but where do I put it?!?