I've been changing out 2L every oil change for the past 3 years, so that's 257K-211K/7.5~6*2=12L of ATF slowly mixed and exchanged over 46K miles.
My ATF is ruby red and no longer smells burnt. The trans shifts very well and no surprises.
I know peeps that have had full fluid changes done and then had tyranny failure in 4-6K miles latter. (none in a land cruiser) The theory is that the new fluid shocks all the debris that's hiding in the corners loose and that clogs filters and orifices. As opposed to a little fresh fluid every oil change that refreshes the additives and cleans gently over time.
An Awful lot of hear-say on tranny flushes, YMMV.
My ATF is ruby red and no longer smells burnt. The trans shifts very well and no surprises.
I know peeps that have had full fluid changes done and then had tyranny failure in 4-6K miles latter. (none in a land cruiser) The theory is that the new fluid shocks all the debris that's hiding in the corners loose and that clogs filters and orifices. As opposed to a little fresh fluid every oil change that refreshes the additives and cleans gently over time.
An Awful lot of hear-say on tranny flushes, YMMV.