Does Any know how many quarts of tranny fluid a 1990 prelude Si with AT and 2.1 motor Help!!

 

I don't specifically know for that car, but it's pretty typical to have maybe 7 quarts of fluid total. But when you drain the automatic tranny, the torque converter doesn't drain. So when you drain & fill, you only need maybe 3 quarts.

If your AT fluid is brown or smells bad, you'll want to drain & fill several times & drive around in between. That way you eventually get rid of all the old fluid that's stuck in the torque converter.