Quote Originally Posted by darknoodles View Post
Thanks everyone I'll get some ATF and drain/refill.
Whilst I haven't got a clue with your drumming/vibration issue, I just did an ATF drain/fill on my own car using Redline D4. My old fluid was looking very used (not even close to the red that it is meant to be), so I may go ahead drain it twice more so that I get a good proportion of new fluid to old fluid.

Not sure of it's just a placebo effect, but the car seems to shift quicker with the new fluid (especially in manual mode) and is less jerky.

Cracking the drain bolt for the first time since it was installed at the Honda factory was a pain in the arse. Broke a cheap 3/8" ratchet. Using a hammer/mallet and an 18" breaker bar did nothing. Finally cracked the bolt open the bolt by using a floor jack to (slowly) raise the breaker bar handle.

I also snapped a few quick pictures so if you're interested I'll post em up. Not enough to do a proper DIY writeup at this stage (hoping to get more pictures the next time I drain/refill it) but may help you visualise where things are.