Mobil 1 synthetic A.T.F. (don't whine about the price... a "rebuilt" tranny can
run $1500.00 + just for the "Part")
Most "Transmission Shops" shy away from M.B. trannys because of parts prices
and the incredibly fine tolerances. USE THE O.E.M. filter (Sleep well at
Night!)
Extended use for Non-Synthetic oil (with filter change) in "normal" urban
conditions would be 2500 miles. ENGINE OIL
(Oh! , Did you mean: Extended Use for mineral based A.T.F.?????)
Mineral A.T.F. is so cheap ( if you insist on using it ) 15,000 miles would be
a safe rule of thumb IF you plan on keeping the car.