Wait!! Before you drain the tranny fluid out of your NWC T5 - while it's true that all WorldClass T5's use tranny fluid, not ALL NWC's use gear oil. My T5 decodes to a '89 S-10 (NWC) and the owners manual for that year says use DexronII.
So for you NWC owners out there, I would do this:
Decode the part no. of your T5 using one of the many online decoders to determine what it came out of,
Then, go to your friendly library and get a Chilton's or a Motor's Manual to match that year/model and go to the maintenance section to find out what the mfg recommends.
