Recently my tranny has been grinding 3rd gear everytime I go shift around 5-6k(i usually dont shift that high at many times). Its not like a loud long grind its more like a nick. You can barely hear it but you can feel the gind. It has a slight grind. I recently changed the tranny fluid to GM syncho mesh to help it out but I still have no luck. Is there some sort of waiting period for tranny fluid to start doing its job? I also had a feeling the clutch was slipping at high rpm and did a few test which concluded that my clutch was slowly starting to go, so my question is does the clutch disc have anything to do with the 3rd gear grind? Anything I can do to help the 3rd gear grind? Thanks for your time and input. Also I've been messing with the clutch adjustment. When the grinding used to happen it used to grind hard but after adjusting it, it feels like its grinding less. Only porblem is that my clutch engages when I lift my foot off the clutch half way. If I bring it closer to the floor(engagement point) would that affect anything?

 

Use genuine honda manual tranny fluid. works great.