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-   -   ATI Trans Fluid (https://classracer.com/classforum/showthread.php?t=73434)

FSA1673 06-24-2019 11:49 AM
ATI Trans Fluid
 
Anyone ever switch between the Super F and the Max Duty Super F and see a difference in stall rpm or % slippage. Looking to tighten things up a bit on the converter.

Jeff Stout 06-24-2019 12:49 PM
Re: ATI Trans Fluid
 
I would also be interested making converter a little tighter. I think trans fluid comes in different viscosity and seeing if anyone has any experience in this. Thanks Jeff

nhramnl 06-24-2019 01:50 PM
Re: ATI Trans Fluid
 
Obviously, any info you gather here (from racers) will be helpful, but I would call ATI and ask them what they've heard from customer/users, and based on that, what they would expect you to see.

monte385 06-24-2019 08:53 PM
Re: ATI Trans Fluid
 
Try some Mobil 404 hydraulic oil.

Marty Rinehart Jr 06-25-2019 10:36 PM
Re: ATI Trans Fluid
 
It will tighten up the converter but not a set amount. Every combination will be a little different.

FSA1673 06-26-2019 08:05 AM
Re: ATI Trans Fluid
 
Thanks Marty that is exactly what I was looking for.

The kinematic viscosity of the Max Duty is similar to heavier hydraulic fluids such as John Deere Hy-Gard and Allison Transynd. Most regular trans fluids regardless of brand have similar kinematic viscosity. I imagine it depends on weight, rpm, and torque on what the converter will see.

Glenn Briglio 06-26-2019 12:26 PM
Re: ATI Trans Fluid
 
Quote:
Originally Posted by FSA1673 (Post 591327)
Thanks Marty that is exactly what I was looking for.

The kinematic viscosity of the Max Duty is similar to heavier hydraulic fluids such as John Deere Hy-Gard and Allison Transynd. Most regular trans fluids regardless of brand have similar kinematic viscosity. I imagine it depends on weight, rpm, and torque on what the converter will see.
Also what happens to different fluids at different temperatures.

FSA1673 06-26-2019 01:42 PM
Re: ATI Trans Fluid
 
Most manufactures post their kinematic viscosity at 40 and 100 degrees so that you can compare them.

Jim Kaekel 08-01-2019 10:24 AM
Re: ATI Trans Fluid
 
Torco also offers low and high viscosity ATF as well.

Ultimate Converter Concepts 08-02-2019 08:01 AM
Re: ATI Trans Fluid
 
If you do plan on trying the heavier oils, make sure you use a screen type filter, not fabric type

spike1 08-07-2019 07:41 PM
Re: ATI Trans Fluid
 
I'll be trying the JD hydraulic oil at Bowling Green in a few weeks and will see if it lowers rpm by a 100-200 going through the top end. Got the screen in, fluid level full and ready to go.

Randall Klein 10-30-2019 10:06 AM
Re: ATI Trans Fluid
 
Spike 1
What did you find?

Also curious if hyd fluid changes reaction times?

Dan Fahey 10-30-2019 11:04 AM
Re: ATI Trans Fluid
 
Quote:
Originally Posted by spike1 (Post 594160)
I'll be trying the JD hydraulic oil at Bowling Green in a few weeks and will see if it lowers rpm by a 100-200 going through the top end. Got the screen in, fluid level full and ready to go.
If it lowers the rpm at top end.
Does it lower the Stall hit?

D

spike1 10-31-2019 07:05 PM
Re: ATI Trans Fluid
 
It lowered rpm thru the lights by a good 100 RPM and flash rpm went down almost 100.


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