best ATF fluid?
So far, there are 92 comments here... 
Royal Purple?
EDIT:
Sorry just realized that this thread is engine oil, not tranny fluid.
Royal Purple?
EDIT:
Sorry just realized that this thread is engine oil, not tranny fluid.
Last edited by jkichline; Nov 22, 2005 at 11:54 AM.
Originally Posted by curtisad
Royal Purple? Amsoil? My dad swears up and down about Amsoil. I use Royal Purple for everything in my car. Any comments?
Curtis
Curtis
Joined: Nov 2001
Posts: 34,628
Likes: 2,543
From: Schiller Park, ILL Member: #317
I always stick with NON-synthetic (conventional DexIII) trans fluid. There are arguements for both sides, but when FLP build the trans for my WS6 they said to avoid any synthetic fluid in the trans, or any 4L60E for that matter. I follow that same advice for all my auto transmissions now.
I normally use Valvoline DexIII conventional ATF.
I normally use Valvoline DexIII conventional ATF.
Originally Posted by RDISADEIFAN
Ive used synthetic tranny fluid twice in two different cars and ended up draining it out and putting in regular Castrol DexIII back in.
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Originally Posted by RDISADEIFAN
It started to shift poorly like it was slipping,in both cases I used Mobil synth. atf.But as soon as I put back in regular dex. the shifting was back to normal.
Any brand of Dexron III I would recommend. Specifically Valvoline is what I use. Stay away from synthetic trans fluids such as Royal Purple and Red line. They are too slippery and can cause premature wear of the transmission.
