Yes, first thing I done, all oils Inc oil stabiliser. Since put exhaust and snorkel on. Also removed centre console and nutserted the two front holes on the shifter cover to screw it down. Filled the cavity and under the console itself with egg carton foam and buttoned back up.
Whine is considerably lower but the sloshing noise still comes and goes. I've noticed it mainly in 3rd gear downchanging and also accelerating(although it's hard to hear under noise) it doesn't happen in 4th or 5th. If I'm cruising through the suburbs it will happen in second also (constantly changing cogs)
I'm not overly worried about it, but if someone has had it before it might satisfy my curiosity.