My 5 speed transmission on my b15z1 engine is making some rough noises kinda like they sound of a bad bearing, or loose change ( coins) in your pocket, yet the car still runs and drives/shifts fine, just the noise get annoying. I have put some new 10w-30 in the transaxel, and will put honda mtf in as soon as i can get soom, however the sounds continues. I hope it is just a fluid problem, and not a serious transmition problem. The transmission is a S20, so please let me know if you can help, thanks!