hey everyone. my tranny's been a little grindy going into 2 and 3 gears, a little synchro wear i'm sure, so i checked my fluid and it's on the low line (while engine was warm). so if it needs another 1/2 to 1 quart or so, should i use a synchro mesh product, shock proof product, or should i just top it off with a regular gear oil and like it? thanks guys.

There are about 99,000 threads on this here and in the service forum, do SOME research.