I have a metal sump to go onto my 07MY TDV6 auto gearbox.

Before I do the job I will get temps up to between 35c and 50c and get the replacement ATF up to temp.

However it will take a while to get the old plastic sump off and the 3-5litres or fluid in the sump out and then the new sump on. As it is quite cold here at the moment I would expect the fluid that remains in the system will most likely drop below 35c.

Do I have to worry about this or is there no issue as long as the new fluid is above 35c. If I do have to get the fluid remaining in the box above 35c how do I do that? Is it ok to run the gearbox with 3-5litres missing to get temps up.

Cheers

Garry 07MY RRS TDV6
Arctic Frost
Aspen Interior

Drain the fluid (making sure the filler comes undone first!) replace the filter/pan, top up with fluid until it starts to overflow. Put filler plug back in. Start car and get oil up to temp. Put car in drive and command shift 1,2,3 N Reverse to get it moving through the oil galleries. Back in park, remove the filler and top up till it starts coming out. Bodsys Brake Bible
Software Updates Contact me
RRS Timed Heat/Remote kits - Contact me
BAS Engine Re-maps/ EGR Blank EuIII and EuIV
Clock On The Dash/ SNOTM /3Flash / BT Update /Service Reset/Error Codes read\ Gearbox Reset
See it HERE

Thanks for that information - great help as always

Garry 07MY RRS TDV6
Arctic Frost
Aspen Interior

just make sure engine is still running.  Bodsys Brake Bible
Software Updates Contact me
RRS Timed Heat/Remote kits - Contact me
BAS Engine Re-maps/ EGR Blank EuIII and EuIV
Clock On The Dash/ SNOTM /3Flash / BT Update /Service Reset/Error Codes read\ Gearbox Reset
See it HERE

Yes - thanks 07MY RRS TDV6
Arctic Frost
Aspen Interior