Just did a drain and fill of the transmission fluid on a 07 CRV and during the process I noticed something disturbing. The dip-stick tube had this white stuff in it. Some sort of corrosion or build up on the inner wall. My fear of course is this stuff getting into the fluid. The dipstick naturally rubs this stuff off and I don't know how much is flushed down during the drain and fill. I took a black cloth and my fat finger to wipe what i could off but I am sure there is plenty left that I can not see or get to. The white stuff smeared a fine powder and not grainy. I had a co-worker check his 11 CRV and found white stuff there as well. I am thinking I should remove the tube and clean out before the drain and fill but that seems like a lot of work.