Transmission Experts Weigh In

[Overboost]

So I have decided to finally service my GM A5S390R (GM 5L40-E) transmission. I had a small leak from the selector shaft but now I can't help but wonder how much it has leaked before I noticed it. I am thinking it must be low so it is time to drop the pan, replace the filter and pump in some fresh ATF.

I want to do a filter and fluid change and then a simple drain and change the next day once cooled back off so my decision on preferred ATF will be depending on my budget.

What I am asking everyone is what is the preferred ATF for my GM transmission and also if this thread gets any traction, what is the preferred replacement ATF for the ZF boxes as well. (My E46 has the ZF 5HP19)

There is a list over on E46Fanatics from member Balidawg and I have copied it here for reference. Feel free to add any missing fluids or any suggestions you might have.

I would love to hear from others and especially RRPhil as he is the one man I know really knows his stuff on automatic transmissions.

GM - Dexron VI
AC Delco Dexron-VI: http://www.acdelco.com/auto-parts/ve...dexron-vi.html
Amsoil Signature Series Fuel-Efficient Synthetic: https://www.amsoil.com/shop/by-produ...mission-fluid/
Castrol Dexron-VI: https://www.castrol.com/en_au/austra...ax-dexron.html
Havoline Global Multi-Vehicle: https://cglapps.chevron.com/sdspds/P...&docFormat=PDF
Mobil Dexron-VI: https://mobiloil.com/en/automatic-tr.../dexron-vi-atf
Pennzoil Platinum LV Multi-Vehicle: http://www.pennzoil.com/en_us/produc...NhbGU9ZW5fdXM=
Redline D6: https://www.redlineoil.com/d6-atf
Super Tech Multi-Vehicle Low Visosity: https://www.walmart.com/ip/Super-Tec...1-gal/54310244
Valvoline Dexron-VI: https://www.valvoline.com/our-produc.../dexron-vi-atf
Valvoline Maxlife Multi-Vehicle: https://www.valvoline.com/our-produc...ti-vehicle-atf

ZF - LT71141
Castrol Transmax Import Multi-Vehicle:https://www.castrol.com/en_cr/ccsa/h...-multi-vehicle
Febi No. 14738: https://partsfinder.bilsteingroup.co...cle/febi/14738
Fuchs Titan 5005: https://www.fuchs.com/de/en/special/...itan-atf-5005/
Havoline Global Multi-Vehicle: https://cglapps.chevron.com/sdspds/P...&docFormat=PDF
Liqui Moly Top Tec 1200: https://products.liqui-moly.us/top-tec-atf-1200-1.html
Mobil ATF LT71141: https://www.mobil.com/English-GB/Pas...L-ATF-LT-71141
Pentosin ATF1: http://www.pentosin.net/specsheets/Pentosin_ATF1.pdf
Ravenol 5/4HP: https://www.ravenol.de/en/products/u...-hp-fluid.html
Redline D4: https://www.redlineoil.com/d4-atf
Royal Purple Max ATF: http://www.royalpurpleconsumer.com/p...mission-fluid/
Super Tech Multi-Vehicle Low Visosity: https://www.walmart.com/ip/Super-Tec...1-gal/54310244
Valvoline Import Multi-Vehicle: https://www.valvoline.com/our-produc...smission-fluid
Valvoline Maxlife Multi-Vehicle: https://www.valvoline.com/our-produc...ti-vehicle-atf
ZF Lifeguard5: https://aftermarket.zf.com/us/en/aft...l-change-kits/