Ok, it has been almost 10 years since this great thread was started. Thank you
@Overdrive for an excellent writeup. Just want to confirm that following is still true in 2025 for A1 trucks:
1) Three times flush is still the best way to replace HDO with ATF.
2) Looks like TES 295 was replaced with TES 668. Is CASTROL TRANSYND 668 ALLISON TES FULL SYNTHETIC AUTOMATIC TRANSMISSION FLUID the best option to date?
3) Is best filter kit PN: 29540493? I prefer original parts, unless there is a better kit.