The car has 167004 kms, so about 100 000 miles,

So I want to do a progressive flush of the gearbox
Drop the sump, and check for bits, close it all and fill, do this a few times over a few months so that there is new fluid in the gearbox.
It does shift nicely, but has a slight surge, suspect the oil or the oil level in box

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2002 BMW 325i Touring
2003 BMW V8 4.4
2002 Land Rover Discovery 2
2002 Land Rover Freelander 1
1980 Lotus Esprit. Sold. Less work for me
1961 Jaguar MK2 Sold. One less project
1962 Land Rover Series 2