I've recently heard that if you have over 100,000mi on your tranny it is better to keep the old fluid in there. the reason being is that (according to what i heard) it loosens things up in there and could cause slippage/ leakage. Does anyone have any experience with this subject? I find it hard to believe, and I really want our 89 190e to shift smoother. it's so abrupt of a shift now that when it switches gears you can actually hear the interior creak. and I dont want to cause premature wear of the differential as it is already kinda noisy.
thanks for your time,
'67 250se coupe
'89 190e 2.6 (gone but I kinda miss it)
'07 BMW x3
'59 0319 diesel Omnibus...the "O"
'64 Lambretta Special 185 hot rod scooter
'66 Lambretta SX200
'59 Lambretta 250 race bike
'70 Lambretta GP200
'77 860gt ducati
'66 ducati monza