Thread: Auto trans flush method?

Originally Posted by Leo109

Must have picked it up from one of those Police reality TV shows...

👍 i thought as much.... just checking ....😅

Originally Posted by justinc

👍 i thought as much.... just checking ....😅

Moving off my own thread - how are you off for DII WDH approved towbars/hitch receivers? That is, the Land Rover RAA527 or the equivalent (identical?) Hayman Reese jobbie? Happy to pay freight costs on top of purchase price. (Tho' I'd much prefer to collect it personally.)

Originally Posted by Leo109

Moving off my own thread - how are you off for DII WDH approved towbars/hitch receivers? That is, the Land Rover RAA527 or the equivalent (identical?) Hayman Reese jobbie? Happy to pay freight costs on top of purchase price. (Tho' I'd much prefer to collect it personally.)

Hi mate on hols at the moment can check when i get back on 29th☺

Originally Posted by justinc

Hi mate on hols at the moment can check when i get back on 29th☺

No worries. Great to hear you are having a bit of time off - Enjoy!

I also serviced my auto trans on the weekend and based on below will do it again and again.......
In terms of number of flushes, can someone check my calcs below.
Assumption is a 9.7 litre capacity and 4 litres removed/replaced each time.
Based on that I can see why 4 time gets the nod for diminishing returns.
As for kms between changes, I would think a run around the block and good use of all gears would be sufficient to mix the old and new fluids.


Oldnewfluid.jpg

Oil Change No.	Total Volume	Removed/Replaced ltr	Retained ltr	Old oil volume	% Old	% New
1	9.7	4.0	5.7	5.7	59%	41%
2	9.7	4.0	5.7	3.3	35%	65%
3	9.7	4.0	5.7	2.0	20%	80%
4	9.7	4.0	5.7	1.2	12%	88%
5	9.7	4.0	5.7	0.7	7%	93%
6	9.7	4.0	5.7	0.4	4%	96%
7	9.7	4.0	5.7	0.2	2%	98%

I make it (assuming atf well mixed between changes, 9.7 L total):

change / volume new atf (L)
1 / 4
2 / 6.35
3 / 7.73
4 / 8.54
5 / 9.02