408WS6

iTrader: (1)

What fluid is everyone using in their TH400?

I am using Dexron III, but I've heard other people use type F fluid. Which is better? With the Dexron, it feels like it slips too much in 3rd gear. I've hear type F fluid is better for TH400 because it allows the clutches to "grab" better. Is this true?

My transmission sees some street use, but not a daily driver. Mostly it will be used for the track.

Thanks

DAPSUPRSLO

iTrader: (14)

I was told Mobil 1 Synthetic ATF by transking, my trans supplier.

2002_Z28_Six_Speed

iTrader: (19)

I have a book and it said that Type F had a better static fiction but worse kinetic friction. It was called Automatic Transmissions and Transaxles Second Edition.

DanZ28

iTrader: (5)

I called Rossler the other day after posting this same subject a week ago and couldn't get a clear answer. Rossler told me to use Dex III or a mix of DEX III and Type F would be good to. They aslo say B&M trick shift is good to use. I personally am just going to use B&M trick shift now as I don't want to do the mixing fluids game.

Dan

408WS6

iTrader: (1)

I don't like the idea of mixing either, but that might work for me since I already have Dexron in it. I need to drop the pan anyway, so I might as well fill back-up with type F. It'll have some Dexron left in the convertor and cooler.

408WS6

iTrader: (1)

I called various places too. Seems like if you call 5 different transmission shops, you get 5 different answers. I had one say DON'T use type F. Another one said use ONLY type F.

revtime

iTrader: (1)

Doesn't look like you can go wrong either way.
I have a Rossler TH400 in my car and I use Dexron III.

It pulls fine.

Typhoon#1600

iTrader: (5)

if the guy (Rossler) recommends D-III, that's what I'd use (and it is!). He also told me about the F mixture, but I dont think it needs it...shifts plenty hard for me!

FLT

iTrader: (1)

DexronIII is all we recommend. Nothing fancy just plain old oil.

2002_Z28_Six_Speed

iTrader: (19)

They don't know what they are talking about. It won't mess up anything. You are just playing with how the transmission will react since it is changing the coefficient of friction. Clutches will be applied faster or slower. Maybe you will have less slip with this.