Having replaced my gearbox sump & oil at approx 124k and then flushed it with petrol to see what was inside the filter I found almost nothing.
I'll definitely replace the fluid again at maybe 150k ish (if the car stays with me another 10k - lol), but I won't be bothering with the sump again.
However, if yours hasn't been done yet at 140k, I think I would change it to be more confident in how clean things were.
PS if you've got steel sump on there now, its highly likely its already been done - as plastic was OE. Paul,
2001 Discovery 2 TD5, 211,000 miles & climbing
2006 FFRR TDV8 Vogue 145,000 miles & climbing
Member of Midland (Land) Rover Owners Club, www.mroc.co.uk

its definitely a plastic sump on it.
i can probably change fluid/sump again after few k miles. I am expecting the oil to be pretty bad in there so was thinking of doing multiple oil changes to get most of old oil out.

briangunn wrote:

Reading this thread with interest, I have a 3.6 TDV8 I've owned for 10 months - when I got it the first thing I did was change the fluid and filter as it had never been changed. It drives 'ok' but I feel the shifts can be a bit odd at times, sometimes if feels like it hangs onto gears for too long, sometimes the shifts are super slurred, or they can be quite harsh when the weather is very cold.

I'm getting some 'interesting' readings out of IID on my adaptions (if they're the right values):

Click image to enlarge

on fill pressures

Click image to enlarge

on times.

If those are 'correct' that would indicate to me that it's waaaay out...

briangunn wrote:

Reading this thread with interest, I have a 3.6 TDV8 I've owned for 10 months - when I got it the first thing I did was change the fluid and filter as it had never been changed. It drives 'ok' but I feel the shifts can be a bit odd at times, sometimes if feels like it hangs onto gears for too long, sometimes the shifts are super slurred, or they can be quite harsh when the weather is very cold.

I'm getting some 'interesting' readings out of IID on my adaptions (if they're the right values):

Click image to enlarge

on fill pressures

Click image to enlarge

on times.

If those are 'correct' that would indicate to me that it's waaaay out...