I think the thing that is a bit misleading is...

...the filter in the transmission.

It isn't like the filter in your engine - OK on the side of the engine. Oil in a transmission doesn't get pumped from the sump through the filter and then into the moving parts. The filter in the transmission is only there to protect the valve body. There isn't much flow through a filter fitted under the valve body.

I think the best way of getting junk out of the transmission is to change the oil and the filter - the best thing about changing the filter is that you have to remove the sump pan and then you have the opportunity to remove all of those glittery bits of junk (that hopefully won't be there)...

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!